First off it doesnt have built in wireless so you have to buy a wireless adapter to play online there 90-100$.
The new 360's have built in wi-fi
Also the controllers use batteries if you want the rechargeable ones you have to buy those separate (or keep buying batteries which is even more expensive) theres another 45-65$.
You can also use wired controllers...I prefer wirder peripherals, for the simple fact that I never need to recharge them or worry about them dying on me.
Then you got the LIVE subscription your paying annually as well.
You may have to pay for it, but it's also a better (and more populated) service.
Not to mention the worries of RLOD happening which happens to over 75% of 360 owners and if your past your first year your SOL.
Microsoft said the they fixed the RROD in the new 360's. Also, there is a 3 yr. warranty to cover it, so if you're past your first year, you are not SOL. I have had my 360 since 2007, and still have not gotten a RROD.
the PS3 has better graphics hands down the only games what look better on xbox are multiplatform games and thats because they are formatted for the 360 and transferred to the PS3 saving money and time. Otherwise every PS3 game would hands down beat a 360's graphics.
The PS3's hardware might be better than a 360, but the games for it svck. Xbox, hands down, has a MUCH better library of games. There are some gems on PS3, and I emphasize "some."