I don't collect vintage, but I do have about 50 or so figures from my childhood, with some vehicles that are in horrible condition.
I do have an Imperial Shuttle though in spectacular condition that I bought about 3 years ago, and a Sandcrawler that is in fair-good condition.
As for modern, I collect about 99.9% of everything and collect loose. There are a few here and there that I do pass on though, such as the flipping deluxe figures and that damn new R2D2. If I think something totally sucks, I'll pass on it.
I will also be passing on the Bounty Hunter 4-pk, I don't need to throw away $20 on that at all. Bad decision Hasbro!! Boo!! Boooo!!!