Hmm, now that I think about it, I'm only REALLY a completist of the Yukikaze resin kits!
Though I've also been trying to collect all of the Gunbuster mecha and ship resin kits from General Products (and I'm doing pretty good, considering how rare they are )
As far as Macross stuff goes, I pretty much just buy the stuff that interest me (and even of those, I'll often have to pass on the ones I can't afford).
I've got a pretty good collection of resin kits going, but they're mostly just bits and pieces of the various companies' series of kits. I guess you could say I have a very diverse collection
And hell, I never even bothered to keep up a complete collection of Hasegawa valks! I probably have about half of them.