I haven't purchased any of my programs yet. I've been unemployed for the past half year and have only begun to start working again so when it comes to software, for the time being, I'm scrounging around for hand outs. LOL.

I was considering 

A liscence for Mod Tools (unless it costs as much as Softimage - then I'm out of luck)
Metasequoia (when a substantial version has been released)
Dog Waffle
and now Curvy.

Technically I bought Carrara 7 Standard because I shelled out the money for the magazine it was in specifically for the program and not the mag.

Realistically I could just get by with Blender, Mod Tools (un registered), Metasequoia (un registered) and Sculptris as I'm not doing this commercially but owning a license to Meta and Mod would help in case i ever did sell any work and it gives me access to more tools and export options and Dog Waffle and Curvy are just fun programs. =D

Oh yeah, one other, if Sculptris was ever sold - I'd get that too.....if it wasn't sold for a ridiculously high price and had a lot more new features than it does now.