There was a very nice post the other day, which turned into a major fanboy love fest so why not have a debate which doesn't go with "my console is better than yours".
Better exclusives (my opinion)
Free online game play
in-built wifi & bluetooth
future proof gaming
more expensive than a xbox360
warranty from sony is hit and miss
long initial loading time for games
lots of game updates
better online play
more games available
Long warranty on older models (RROD)
online content (sky sports etc)
easy to modify for 'downloaded games'
loud & unreliable (especially older models)
lack of features (wifi, bluetooth) (on older models)
expensive to upgrade (HDD, wifi) (on older models)
lack of great exclusives
That's all that I can think of at the moment, as you can see I have tried to be impartial.
I have owned 2 360's and one PS3 and will be buying my second PS3 in the next few weeks. I am buying the ps3 due to it's feature list and it's exclusives. The xbox is a good console (loved mine) but the PS3 has more of what I want at the moment.