Woh, lol.
A thread with a timer before kaboom.
There was a full comparison completely unbias written by someone on the forum, Unfortunately it never got stickied, and it seems to have disappeared into the ether.
360's vary in noise ranges, and can be loud, but can also be quite quiet, With the added feature of copying games to the Hard disk and cutting out the DVD noise, They can be even quieter.
PS3s are very quiet, And i've never noticed them becoming half as loud as some 360s,
Both games catalogue are excellent, but which ever console you choose you will be missing some fantastic games that are exclusive to the alternative console.
Bluray is a plus for ps3, if you're a movie fan.
I would personally go to a game website, Browse through each consoles game catalogue and choose the one with more games you want. Rather than looking at hardware flaws.