i would like to put a vote in for a trek 310 elance.

mid 80's frame with downtube shifter brazeons. plastic screwon under BB cable guide, so RD stop is on bottom of the driveside chainstay. pump peg! ishiwata tubing.

i've got a 79 trek 710 too and to tell you the truth there is little to recommend one over the other. mine is a 56 CC seat tube and there is plenty of toe clearance for my size 10.5 shoe even with 27" wheels (which it came with).

these are cheap and i see them on CL all the time. mine cost me 89 with original components (cyclone RD, araya a20 rims. shimano arabesque hubs, sr crank, seatpost and stem/bars.

these frames were the first imported from taiwan (built by merida). so, desirability is purely due to precedence. in that it was the FIRST undesirable frame branded by trek from outside the US. ha

see the vintage trek website for more info and pictures.