I'll say it again, the third party exclusive is all but dead. People ought to be buying systems based on the first party selection and side features. This is why Home and Live are so key. This is why the differences in the featuresets are so important. Microsoft have set themselves up well by creating a very compelling online service, and Sony has anticipated this shift by buying up and developing a huge number of first-party developers. Only time will tell who had the better philosophy.
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.
