i dont have a psp yet, and i want something to use on long car trips
nether wate for the ps vita (psp2)
1. the "go" has a short battery life (1 to 2 hours long) & the graphics arn't that good. 2. The 3000 model longer battery life (3 to 4 hours long) & and the graphics are very good. PSP "go" owner & PSP 3000 owner CJS2
The newer unit. Always go for the newer unit.
And they may be releasing a newer newer unit. Via Engadet
Always go for the newer unit I agree, but remember that the Macbook Air was a 'new' unit at one time, not all things new are great. Best to buy based on your preference and plenty of research.
*and consider if you wlll be playing a lot of umd based games. The go has no slot.
+1, but keep in mind when buying a new unit, you may not be able to run homebrew. Most 2000's and 1000 series run homebrew with practically a few drag and drops on the memory stick.