this should be a no brain but i was wonder if i should use an old used bike in the basment of the bike shop i work at or buy a new bike w/ my emp disc , the only thing is i like to be able to build a bike my way but im wondering if by the time im done if i could have saved a tone of time and money just buying something new. oh by the way i want to build a single speed cyclocross bike for riding on the tow path to get some indurance riding in. and if anyone knows of any good bikes to look at we carry trek specialized giant and haro.