comparison of specs between PSP 1000 and 2000.
I have a 1000 Kigo, yes. I did have a 2000 aswell, but decided to sell one of them, and the 2000 went. The only real advantage to the 2000 was that the screen was brighter. I though motion was more fluid on the 1000 screen. I think it must be possible to pick up 1000s for peanuts now and they are fine if well looked after. Mine is a Japanese 1994 model brick built Wipeout Pure battle machine - it has fried the yanks, smoked the French and occasionally given mild concern to Austrians and is still going strong!
I think your 1000 will be fine for GT PSP, Kigo. They can`t make the performance too demanding for PSP 2000s and if a slim can play GT a fat can do it too, I would think.