I voted Xbox 360, that's where I play the MOST. However, I think it would be nice to credit everything else. I also play PS3 from time to time, I play a lot on my iPad as well and also own a PSP and PS Vita, but it's unfair to even count them, because I barely ever use them for anything lol
BEFORE getting the X360 I was getting a PC, actually I got a PC, but the experience turned out to be VERY frustrating, some top notch (back then) games would play perfectly like Doom 3 and Quake 4, while others like Neverwinter Nights 2 wouldn't work accordingly, games would crash, problems not related to the games showed up, then I found out how pissed I would get with the fact that the "options" menu would allow me to tinker with graphics and all, which basically threw on my face that my PC wasn't good enough for a decent experience, and well, bottom line, a month later I quit and bought an Xbox 360.
AFTER the advent of iPhone 3GS in my life I got hooked up on Apple, bought an iPad, kept up (sorta) with all new cell phone releases, and when I was faced with the fact that it was time to change my laptop (I had already passed that PC on), I changed it to an iMac, which has allowed me to enjoy some gaming fun with GORGEOUS graphics... BUT still, I dunno why, I can't get over the fact that, even though the iMac never crashes, has great graphics, doesn't fuck up nor anything, it's still a computer and that sorta puts me off, I never finish a game, I buy and play but never get to the end on PC OR iMac... I think it's the confort of the joystick and the big living room witha huge home-theater that attracts me to consoles hahaha