From 8-48 years old have ridden over 130 bikes and was a bike messenger et all.....had a trek 520 for years in college...awesome bike. Found this 750 for under $300 with all the goodies and can't believe how nice it is...smooth and supple and has the lugs the 520 didn't but same geo. Rides nice as you can get...even can compare it with the roadeo rivendell with no noticeable differences. Maybe the trutemper avr plain 520 cr-mo? Dunno, but trek had it right with this one. If you see one, and need one, you con't possibly go wrong with the 750.