I chose the regular PSP over the PSP GO because it's not possible to purchase USED GAMES for the PSP GO. Also, if you're "done" with a game on the PSP GO, you're essentially stuck with it because you don't have a physical media to SELL. I certainly always want the option of obtaining a game for the lowest price possible, and the PSP GO just doesn't give you that option - you're STUCK with whatever the Playstation Store offers.
That being said:
Mod Nation: tried it as a free demo. ICK! Well, maybe I'm just not into car racing, but the "build a track" concept just didn't work for me and since the PSP is generally a one person thing, it doesn't make sense to play a game that's really meant for multiplayer action.
Little Big Planet: I have the PS3 version and LOVED it, so that's the reason I bought a PSP. The PSP version of Little Big Planet is not as good as the PS3 version, but because it's a portable game, it's worth it to have the mini version that's PSP.
Final Fantasy: I have two FF games: Crisis Core and Tactics. Haven't gotten around to trying Tactics, but Crisis Core is a good game. As most FF games, it gets a bit repetitive with the fighting scenes, but the graphics for the cut scenes are amazing and the story is reasonably descent. I think I'll have to grab a teenager to help me get thru this one section because I'm stuck on it and the online "walkthroughs" do NOT sufficiently cover the coordination requirements that one has to have in order to survive the scenario.
Atari Classics: I grew up with an Atari 2600 - this reminds me of my childhood. Enough said. (Hubby sez the screen is too small. I suggested a visit to eye doctor and purchase of reading glasses. He's didn't like that)
Rockband: Came with the PSP.

I somehow can't wrap my head around the concept of playing guitar by pushing buttons. I KNOW I have the PS3 version and press buttons, but at least the UI for that one is shaped somewhat like a guitar...this is a bit befuddling...
Well, that's MY PSP game collection... anyone want to help me w/ getting beyond that section in FF:Crisis Core? I have to sneak by some guards and the sneaking part is just not "me"...
