Here is how I see it, the 360 is a gaming console and that is as far as and as good as it gets.
With the PS3 you get a blu-ray player which when it first came out was the cheapest on the market, a gaming console, and with the aspect of HOME coming out soon a type of MMO kind of like 2nd life. So with all these combined you get an entertainment system that covers all your bases.
So its up to you what do you want, a gaming console or an entertainment system?
I go with the latter.