Out of those, I would pick the plastation 3 because
*Cell Processor- The cell processor is an extremely powerful micro processor built of 8 processors (SPE's) and one PPE. This processor is built for extreme amounts of processing and is very useful for multi tasking through artificial intelligence, physics, lighting navigation, etc- The xbox 360 has a 3 core processor, which is strong in general processing, albeit not the best for video games.
*RSX GPU- The RSX is a powerful GPU which is specialized to work with the cell processor to render DX10 like graphics by pooling it's RAM.- The xbox 360's GPU can only handle DX-9, while is good in the graphics department, though not the best.
*Blu Ray- The next generation disc medium which can store up to 50GB (100GB in experimental models) The extra space allows game developers to make large responsive environments, complex artificial intelegance, HD video and audio, etc. without compression.- The xbox 360 only uses DVD for games, which can only hold 9GB, which results in short games, aka Halo 3, Bioshock, and gears of war.
*Other operating systems- The ps3 can get different operating systems installed, such as Linux, allowing it to be an alternative computer, and you can install many diferent programs.- The xbox 360 cannot do this
*Web browser- The ps3 has a decent web browser, which you can go to many different web sites with, it does have basic flash updates, but it does need to be improved upon, including in java, though this can be fixed easily via a firmware upgrade. Many popular sites like myspace and youtube are accessable though.- the xbox 360 doesn't have one
*Play TV- Pretty much Tivo for your ps3, a tuner that you can record things with. Though it has only been announced to launch in Europe so far.
*Interchangeable hard drive- This pretty much means you can change the size of your hard drive with any hard drive so you can store more things.- you have to buy an expensive MS HDD for the 360
*Built in wifi- Wifi lets you connect to the internet wirelessly- With the xbox 360 you have to buy a wifi adapter for $100, this comes standard in the PS3.
*Free Online- the xbox 360 costs $50 per year
*Playstation Home- Playstation home is an interactive community of ps3 users where you can play games or meet up with friends and hang out at your virtual home and hang outs, as well as stream live media(releasing in october, and is FREE)
* Games- For now good games include; Heavenly Sword, Resistance Fall of Man, Rainbow Six Vegas, Folklore, warhawk, lair, and motorstorm. Good upcoming games are Ratchet and Clank Future, Call of Duty 4, Haze, Uncharted:Drakes Fortune, Metal Gear Solid 4, Gran Turismo Prologue, Eye of Judgment, LittleBigPlanet, SOCOM confrontation, Tekken 6, Time Crisis 4, White Knight Story, and Final Fantasy XIII. Over 300 games will be released by next spring.