You just CANT go wrong.. both are GREAT
Seeing that the XBox has been hacked for a very very long time and the PS3 just got hacked, I think it's a myth that any games on PS3 have been hacked. Anything you've seen on PS3 are people "glitching" (taking advantage of a bug in software to do something not originally intended). The only thing I've seen is a Hello World type homebrew application and the AsBestOS by Stack Overflow to allow you to install Linux again.
What you will be likely able to do now is pirate PS3 games and play them online, which is unfortunate because it's going to drive the price of games up. On the other hand, if you are one to like to do this sort of thing, PS3 may be your platform of choice because based on the video I watched regarding what Stack Overflow did, you'll be able to basically copy a game to the hard drive and run it and PSN won't be able to tell. Counter this to the Microsoft claim that they can ban anyone that is playing pirated games (as evidence by a modification performed to their system). I guess the Asian servers are going to start filling up very soon.
Anyway, both are great systems. I don't think there is any separation in first person shooters or sports games. Online is a tie basically. That one boils down to if you are okay paying a few dollars a month to be able to talk with friends while they play a completely different game. I wouldn't let the cost of online deter you from buying an Xbox because it's not that much if you are playing a lot online anyway. I'm wondering.. does anyone have any statistics to show how many people are playing, for example, Black Ops on XBox and on PS3? I'd be interested to see if there is any real disparity there. From what I've read, and if Sony is to be believed, there are about twice as many users on PSN as on XBox Live.
Click Here For Reference As far as new interfaces, I think the XBox wins with the Kinect over the Move. The PS3 offers BluRay, but if you are like many now and just watch streaming movies on Netflix, both have built-in WiFi now (I think). Personally, as I mentioned before, I'm happy to be a PS3 owner and am anxiously awaiting Socom 4. I may even buy KillZone3 now that I've heard a rumor that buying KZ3 will get you into the beta for Socom 4...