I'm still hitting the pawn shops several times a week and watching Craigslist like a hawk. I mentioned that one pawn shop has a trashed Trek 800 for $49.99 but I discovered that a another pawn shop down the street has a really nice condition Trek 820 for the same price! Unfortunately, both bikes are one size smaller than I want or I would have bought the 820. My grail bike right now would be a 90's Trek 9xx model or a very early 90's Trek 750, but neither of those shows up very often. In the meantime, I've got this thread as a great reference for some quality frames I'm not necessarily familiar with.