Okie dokie, some 360 comparisson comments below, they don't dispute your points, only add a 360 context, It's likely i'm wrong about some stuff and forgotten other stuff.
*edit* Yay for yellow, red make my eyes hurt
PS3 Pro's
1) Built in wireless.
Useful. Although charged for, the 360 add on module adds the same capability at a comparable "total" price. I'd call that a draw more or less
2) Built in blue-tooth.
No bluetooth on the 360 without a doubt, although it uses wireless for the controllers, wireless headsets, VoIP etc. Not sure how useful BT is on a console day to day but I guess if you can use it to sync to a phone etc it's worth having. There is a third party 360 bluetooth adapter if you really wanted it though. Marginal advantage to the PS3 i'd say (although I'm open to being persuaded it's more useful)
3) Built in power supply unit.
External on the 360, not sure it's an advantage or disadvantage one way or the other. You could argue the external PSU contributes to the 360 being slightly less bulky on the AV shelf than the PS3. - Draw?
4) Blu-Ray. (Arguably one of the most future proof players on the market)
Clear Ps3 win on the media front now HD-DVD has died. Unsuprisingly the PS3 Blu-Ray player seems to be one of the better implementations and is software upgradeable
5) Whisper quiet.
Agreed - PS3 win (hands down)
6) Better Build quality.
Agreed, although the 360 is much much better now than the early builds - PS3 win
7)The ability to upgrade your hard drive using standard third party 2.5" Sata drives.
Doable on the 360 as well although it's not particularly straight forward. Not necessarily a massively big deal as the 360 doesn't really rely on drive storage and you can use an external USB drive for music/pictures/video. Marginal PS3 advantage?
8) Free on-line gaming.
As things stand I still think 360 live is the better option, and although not free £25 per year is a good price compared to the cost of games & hardware for the additional funtionality Live offers over PSN. This might change with Sony Home I guess although it seems to have been delayed again. - 360 advantage
9) The ability to use third party steering wheels & Headsets.
Same on the 360 - Draw
10) Internet Browser.
Definate + for the PS3!
11)No forced advertising on your XMB.
There's a few adverts on the Live Blades but nothing that makes a differnce to any functionality or experience I don't think. Most of the adverts are to highlight new games or demos and so could be useful. - Draw (unless I guess you really feel strongly about adverts?)
12)Higher quality audio.
For Blu-Ray agreed, the lack of Tru-HD is a shame on 360 although as it doesn't have Blu-Ray it's not the end of the world. 5.1 DTS and WMA-Pro seem fine for gaming. I guess if you have a high end Amp and 7.1 to use the PS3 as a bluray player it's an advantage. PS3
13)Bountiful amounts of 'techy' options to play around with from DVD filtering to Audio bit-mapping etc, the PS3 is a 'gadgeters' dream.
Errr... Not sure I can comment on this one, I'd prefer optimal settings and not change 'em.
14)The ability to remote control your PS3 from your PSP, now with the added audio out via PS3 during remote play you don't even need to turn on your TV, you can essentially use your PSP as an advanced remote control to use your PS3 as a high quality Hi-Fi component.
Needs you to spend a wedge on a PSP though, although useful I suppose if you already have one. 360 allows any MP3 player, including iPod, to be plugged in and playback being the closest 360 comparisson I guess. Draw?
15)No official memory card needed to back up games saves.
512mb 360 memory cards are around £25. PS3 are def cheaper although again this can be negated somewhat by the premium played for the initial console
16)Controller recharger included as standard. (plus easy to upgrade via use of cheap third party longer life battery's)
360 play and charge kit is around £14 (see previous comment around initial cost). 360 can also use standard rechargables if you have them.
Future Pro's
17)PlayTV
18)Home
PS3 con's
1) No in-game XMB
2) Multi-Platform Titles are often allot poorer on the PS3.
3) Lack of AAA exclusives.
4) No in game messaging.
5) No Achievements
Some 360 Pro's not mentioned (and in no particular order).
Hi Def movie and music video on demand download (about to be joined by TV series)
Online play designed in for pretty much every title.
Parental controls
Gamer points achievements
Live Arcade - free demos to download of past console, computer and arcade games with full game downloads at nominal cost. (Sensible Soccer for the win
)
Xbox 1 games available to download (Fable, Crimson skys, Halo 1etc)
Wifi easily upgradable to 802.1n in the future to support HD streaming speeds
Official iPlayer support imminent
Rumble controllers
Instant messenger integration, in and out of game messages from friends on PCs, Xbox and mobiles.
VOiP conversations with other live users without having to be in a game
Able to leave voice messages for friends
Webcam support - video calls available outside of games.
Replay from iPod compatability
Works with Media Centre to stream recorded TV, Video, music & pictures from a PC via MCE UI. Basic media connectivity for playing video/picture and music from non MCE PCs.
Remote control of MCE PC to view EPG, set up TV recording etc.
Huge library of downloadable demos.
Large library of additional downloadble content for games.
Bigger library of released games
Gears of War
Increasing ability to play online aginst PC gamers although only shadowrun atm I think.
Controllers also usable and supported on the PC
Message Pad - clicks into place on a controller giving you full qwerty keyboard capability.
Able to be used as a fully functioning IPTV set top box for services like BT Vision.
"Wii" type motion controller in devlopment for later this year.
Tight regulation & monitoring of Live online gaming to negate hacks ruining games.
Think i covered the obvious 360 negatives commenting on your post Lowrider.
Happy for you to add or remove points as you feel are relvant or not maybe come up with a joint pro/cons.
Just for the sake of argument lets be clear here on my point of view. There is no right console, only the one that suits your own personal needs and taste. Yes I have a 360 & Wii along with a PC and a bunch of ther stuff, if the PS3 becomes a compelling proposition over the 360 then I'd buy a PS3. I think i've been even handed whilst still putting forward the case for why I think the 360 is a great console.
***Additions***
19. Third party keyboards and mice can be used in supported games and in XMB.
Same in 360 although I think Final fantasy is the only thing that used it (and that could be just keyboard). there is a third party mouse & keyboard adapter though
20. Support for other operating systems, such as Linux (Windows XP has even been emulated through Yellow Dog).
There are Linux builds for 360 although not supported obviously
21. Up to 7 controllers can be connected at 1 time. (instead of 4).
Just the 4 for the 360 i'm afraid, can't imagine why you'd want 7 players on one console though, maybe a quiz type game?
22. SixAxis motion sensors.
Rumble controllers
23. The PlayStation logo spins round.
Errrrr...... nope, you got me there...