Well, I ended up buying Resistance. The local Gamestop didn't have Folklore and Ratchet was $50, more than I can go right now. So I got Resistance. I am going to put it in tonight and play it, I am looking forward to playing and seeing how it is.

Thanks to all that gave suggestions and input on the games.

I'd highly recommend Resistance online if you like fast paced and competitive play.  Happy gaming to you

I own all three, and if I had to lose 2, and keep 1... I'd keep Folklore... although I'm not really much of a racing fan. I got Motorstorm bundled in the first place, so take my opinion on it with a grain of salt.

Honestly there aren't really any Sony-published games in the $30 range you can go wrong with... Even Lair was decent for the price I paid.  Heavenly Sword is awesome for that price, if you don't own it already.  R&C is also awesome.