Italvega was the predecessor to Univega I believe (or they had some other relations...). They made some nice bikes and that one appears to be in top shape, but doesn't appear to be a higher end model. A bit overpriced I think. However, SF is a pretty high priced market in general so finding a good deal might be tough.
The Specialized linked above does look like a decent deal.
Do you know what size you need?
What do you want the bike to do? Is it for exercise, commuting, touring, charity ride...etc.
Edit: just read your other post. At 5'11" you're probably looking for something around 56-58cm depending on proportions, fitness, preference...etc.
Last edited by 4Rings6Stars; 02-04-12 at 09:19 PM.