@Mike
Firstly regarding the reception, you should be grand then as I am also on o2 and have no problems with the reception regarding drop outs and always low signal etc., according to their site it should be excellent too.
It only seems to be a problem if you haven't got great coverage to begin with........
Only problem is that it isn't as consistent as what it should be (I think).
Secondly regarding battery life and that screenshot, that SS alone doesn't tell me anything about battery life!!!!
I am guessing you didn't have the screen on for long or/and very low brightness though, going by the percentage?
Also guessing it was just the standard usage but not too heavy like phone calls, texts bit of browsing etc. spread throughout the 2 days?
That sort of usage is possible on the S as well (can see my battery life throughout the S review thread and skillmisters etc. in this thread)
Both phones are more or less the same in this area, would say the S just edges it overall though due to the screen size and res as well as the S4 chip.
There is no denying that the GS 3 has got a better screen, you may be happy enough with the S screen though? A lot of people who did have the X went to the S and said they personally didn't miss the screen at all.
Again, this is all down to
you though.
Well yeah if you use the same apps i.e. launcher etc. then both phones will look exactly the same etc. apart from stuff like the system menus, the magnifying glass, copy and paste things of sense etc. and same goes for the touchwiz alternatives.
But if you like sense, then you won't have to bother with installing all these 3rd party apps in the first place.
The main reason I use a 3rd party launcher is due to customization and having more features, I love the stock sense launcher overall particularly the widgets but much prefer mrk's black ICS layout (really my design/layout TBPH...............
)
Plus it soooooo good due to the blacks on AMOLED screens
I use quick ics browser largely due to better quick ics controls and being slightly faster at loading/rendering pages and a more minimal UI. Although the sense browser is superb, if HTC update the quick ics controls with more options like the "trigger area size" I would go back to it instantly.
The stock sense keyboard is great especially once calibrated, again I just use swiftkey 3 due to much better prediction amongst other things, which are rather neat. Quite liking the JB keyboard as well now, largely due to the colour scheme/UI and prediction seems pretty good, but it lacks the cursor keys.
The dialer and SMS apps are also great, nice and simple and look pretty, I currently use ex dialer now though as recently it got more features implemented and the black ICS theme looks superb, as for SMS I currently use go sms (the only reason for this is due to being able to customize it to a nice black/blue ICS theme to fit with my homescreens and ex dailer if the sense SMS app had a black background or a more ICS style, I would be back onto it.
Only apps that I am left with it is the stock calendar, gallery, camera etc.
However, as you are aware it is more than just the apps, you have the underlying features, which can't be changed (unless rooted etc.) like the notification bar (personally really like the look of sense notification bar), the "style" of the integrated features like copy and paste functions etc.
TBH, I feel the same with every phone, like all of them would snap in my pocket if sat on etc.
Not a big big guy either. But the one S has an aluminium uni-body which gives the phone a nice sturdy feel to it.
Regarding jellybean features:
- project butter - vysnc of 60FPS therefore all animations should be super smooth with no lag/stutter (not that I have noticed any of this badly on the S though apart from google earth 3D view thing and tab animations in the stock sense browser), so in theory all phones that get this should all be more or less the same then
- google voice - HTC were reported to be working on this a few months ago, so they will probably bring their modified version as well
- notification bar/tray improvements
Amongst a few other things.
Again the GS 3 will get this update, just no idea when. Of course if you root then you could flash a working version long before the GS 3 gets it officially.
Now that you mention root etc. the GS 3 is far better than the S in this area.
From what you have said there, storage shouldn't be an issue for you unless you intend on installing 1-2GB games, throwing like 5GB of music on along with films and tv episodes etc.
What about the one X as an option? Although the battery life isn't that great and it is also roughly the same size as the GS 3 (slightly smaller but not as comfortable in the hand I found), the screen is stunning on it as well, some think it is better than the GS 3 screen. And overall IMO it isn't as good as the S, other areas where the X is better is:
- more internal storage
- NFC
- tegra games (without having to root and install chainfire etc.)
Can you not just get the S and see how you get on with it for a few days and return it within 7 days if you experience problems or don't like it? Or you could just sell it on ebay or arrange a trade etc.?
Do I dare go for the One S or should I go back to the S3. Major plus with the One S is that I'd get a rebate of around £150!
It is nowhere as bad as previous versions though, absolutely despised them!!!! 
(could always try it and return it if it does?)
