A while back I made a comment to a cycling friend of mine that while Titanium cost a lot, it is a "forever" frame. I found out more recently, that nothing is forever (except a Schwinn Varsity) in the bicycle world. In order to be light enough to be enjoyable to ride, the matrial is pared down to a point were it many not last forever depending upon how it's ridden. Anywayz, you looking for an opnion between two materials on a Classic and Vintage forum:

Titainium.