PS3 seems to be best fit for you its library has the most variety of games compared to the competition. The amount of "quality" games it has coming is unrivaled by anyone.
You like shooters, many people do and PS3 has you covered.
Resistance
Socom
Killzone2 (Star of E3 07)
Haze
UnReal Tournamet
COD4 Modern Warfare
Medal of Honor
Blacksite A51
Amy of two
Timeshift
PS3 has alot of everything, not just shooters. You want a completely different experience.
Uncharetd: Drakes Fortune - A mix of 3rd person shooter, action adventure and platforming. This game is praised by every. http://www.gametrailers.com/player/21952.html
LittleBigPlanet - its a star at any show its shown, No one be it Ms or Nintendo or PC has anything remotely close to what LBP. A completely different experience, THIS IS IT. Never before has there been anything like it, LBp fits in no genre. This is innovation at its best. Not a single bad thing can be said about it, actually not a single bad thing has been said about it. http://www.gametrailers.com/player/22033.html
Think of the biggest console franchises, PS3 has the best of them.
Grand Theft Auto
Final Fantasy
Mertal Gear Solid
Gran Turismo
Silent Hill
Resident Evil
God of War
As far as Technology goes PS3 is the most advanced console of the 3, it has the most powerfull most capable hardware under the hood.
