I often see old Trek 720s on eBay. Your size often goes pretty cheap. This is the frame the LHT was based on. The later ones (1984=1988 or so) have a useless brake braze-on for cantilever brakes that were lousy; it is in the wrong place for better brakes. Oh well. Anyway, these bikes have an awesome ride. The chainstay length is quite long, so there is a little power loss but that is more than made up for in the comfort of the ride. Good luck finding one of the right bikes for you.