Yes Lance the 3000 is also 480x272. I never tried one though. I thought the build quality of the old phat 1000 was better than the 2000. A PSP 1000 can be used as a blunt offensive weapon if you are cornered in an alleyway whereas a PSP2000 would be useless in such a situation.
I think all PSPs will play GT at 333mhz because developers can use the full power these days. I could be wrong on that however.