Alright, as a X360 owner, I'll try to convince ya..
Though, to be honest, the only reason I bought my 360, years ago, was because they've had far superior titles released as opposed to the PS3. (With exception to MGS4... and the rumors of KH3.)
Well, here's a small list of pros and cons, I guess. Dunno. Got no other way to convey it. (And I'm lazy, tired, and got stuff t' do.)
Pros:
Over 500 titles released(*)
More comfortable controller (-)
Gears of War (-)
Superior online network to Sony's (-)
Able to install games from disc on to the HDD (Uncertain as to whether or not this is a feature on the PS3, as well.) (*)
Tons of people playing any given game at any given time (-)
Backward compatible for many Xbox games (*)
Online play is generally lag-free, for MOST games. (Note the word MOST) (-)
Superior achievements system (-)
That's all I got for pros...
Cons:
Of the 500+ titles, about 200 of them suck. (‡)
Their network will go pretty damned slowly at peak times, making something that should only take maybe fifteen, twenty minutes to download, take about.. an hour or two. (*)
No matter what, there will always be at least one prat in any game you join.. if it's action-oriented. (‡) (Murphy's Law of Online Gaming)
Can overheat (-)
I can't really think of a great deal more.
(Key: * = Fact; - = Opinion; ‡ = Both fact and opinion, with some odd humor thrown in.)
And, I'm well aware this list of pros and cons is biased. I don't own a PS3, so naturally, I'm going to say that I think the X360 is the superior console.
Btw, if your Xbox is running really freakin' hot, then... get some fans?
(Final word)
Look, in the end, it's up to which system to buy. They both have some incredibly good titles coming up, titles that are guaranteed to be enjoyable.. and, personally, I say just buy whichever one you think will offer you more enjoyment in the long run. That's all I can really say to ya. Good luck on deciding, and I hope whichever choice you make will allow you to have a great deal of fun.
~WyvernZ
(PS: That being said, I hope you choose X360.
)