I have a drz70 right now, and theres no aftermarket parts available. Plus It runs like crap. So I have a few questions on bikes. Looking at Crf50,TTr50, Klx110, and TTR110. Just need a bike to cruise around with my son when hes riding his pw50. How slow are the 50's compared to the 110's? Not trying for top speed, just looking to be able to go up hills an stuff. My main questions is I see alot of of these bikes that are modded out already for the same price as a stock one. Should I choose one modded already or stay with a stock one for reliability? I figure alot of the modded ones have probaly received some abuse.