Hmmm.. Would a Jabba really be bigger that the Bantha? I think they're pretty close in size.
Jabba's probably the only one I would buy (and only if it's done well). I could see more speeder bikes though:
I would buy Ani, Dooku, and Aura Sing w/speeders if they made 'em! Or what about a sandtrooper w/speeder (like in the "Troops" short film) That could be cool too!