I would never buy another Aluminum frame: the welded ones are ALL crookied as the Aluminum warps, although there are a few that are close; if you bend it loses 1/2 it's strength, it transmits a lot of shock and vibration so it will "beat you up" on a long ride, ( some the newer frames with shaped tubes and carbon stays are supposed to better)

I would consider an Alu frame mtn bike with shocks of there were no other affordable alternative.