Buddy of mine had a Proflex in the Army when we were stationed in Germany. He was constantly working on it--ordering parts he had broken, trying to pinpoint the numerous squeakings. Plus, his was all elastomer suspension, IIRC. Wore out quick. Lots of play in the linkage. It would've served him better on the wall as a conversation piece than on the trails. OTOH, I'm sure you could pick one up for cheap-if you can find one. Then, and now, I would recommend pretty much any other bike.