So I'm going to start this off by saying that I'm not too well versed with bicycles. I'm able to do a pretty good job maintaining and fixing them, but that's about it. I really have no idea how to compare them. I had a 10-year-old Trek 800 (bottom of the line mountain bike, still pretty nice as it was a Trek) that recently got stolen, and I've been looking for a new bike. Spent a bunch of time in Europe recently where I developed a liking for older bikes, and so this is what I've found for some ideas to replace it.

Schwinn World Sport - $160
Peugeot UO-8 - $100 (original owner, seems to know what he's talking about. It needs tires though)
Univega Supra Sport - $130
Univega Eagle Sprint - $250

The Peugeot, being the cheapest, has naturally caught my eye. From what I've found online it's supposed to be a pretty solid bike. It does have steel wheels still (ad says they're textured, were they on original models?). The shifters and derailleurs have been replaced with non-stock components as well. I really haven't looked into the other three bikes so much yet because I just emailed the owners to inquire about the specific conditions of all the bikes, so if anybody can point me in the right direction and tell me which of these would be the best deal that would be great.

Thanks