So far I have Hot Rod, Smokescreen, Jazz, Sideswipe, Bluestreak, Dirge and Hoist. I'm looking for any of the others (except Powermaster Prime).
I'm gonna drop by Toys Toys Toys tonight and see if they still have Grapple for $15. Also, Tracks is going for $10 on eBay. So I think I have those two covered.