Please give a reason. Posting and running isn’t fun. Fanboi wars are for snot-nosed kids.
Before I answer, I should point out that I’m a huge gamer and own every major current game platform (other than Microsoft Windows), as well as a plethora of classic systems.
I picked the PlayStation 3. I play it the most by far (Wii gathers dust, unless I have an urge to play Samba de Amigo or NiGHTS; 360 likes to freeze and crash, while Xbox Live is overrun by homophobic, racist, sexist, hateful twits. I recently dropped my Gold account after being a member of Xbox Live virtually, since its inception; why pay $60 USD to renew a online system I can’t use reliably?).
Most (good) third party titles are on both PS3 and 360. Putting third parties aside, Sony (God of War, Heavy Rain, Killzone 2, Little Big Planet, Gran Turismo, Sports Champions, etc.) makes a wider variety of games which are also of a far higher quality than Microsoft’s offerings (FPS, FPS, Fable, FPS, Forza, FPS, FPS) or Nintendo’s (Mario, Zelda, Metroid, crippled Metroid, crippled Zelda, and endless casual games). My game library ought to be indicative of my favored systems; my PS3 and Dreamcast each have nearly a hundred legal titles on my shelf (Software pirates are a cancer and should be fined heavily). I like pretty much every type of video game under the sun (although I only like FPSs, minigame collections, traditional sports, and RTSs in moderation).
As far as portables go, my PSP gets the most love, but I still play on my iPad and DS.
I’ll end this with a list of some of my current favorite PS3 titles (in no particular order):
Sonic the Hedgehog 4: Episode 1
Sonic & Sega All Stars Racing
Sega Genesis Collection
Dynasty Warriors Gundam 2
Heavy Rain (with or without Move)
God of War Collection/III
Transformers: War for Cybertron
King of Fighters XII
Ninja Gaiden Sigma 1/2
Final Fantasy XIII
Star Ocean: The Last Hope International
Assassin’s Creed 1/2
Alien vs. Predator
Valkyria Chronicles, Valkyria Chronicles, and VALKYRIA CHRONICLES (seriously if you own a PS3, BUY THIS GAME)
and many more.
Obviously there’s a lot of Single Player-only games in there. For the multiplayer games, I have a PS3 bluetooth headset.
P.S. As far as my PSP goes I mostly play Gundam vs Gundam Next Plus (although I’ll occasionally pop in Disgaea 2, Prinnies, or some other game).
P.P.S. if you want to exchange PSN IDs for playing online together, PM me and I might choose to share that information.