I've never really paid attention to exactly how long my sixaxes last but i feel like I rarely plug them in. Maybe once a month. Then again I have 3 controllers and use each randomly so I'm a bad judge.
Anyway, I can't wait for the DS3 to come out here so that I have an excuse to get a 4th controller.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 
and Wii 
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.
