how reliable are the 250rs?? ive heard mixd things about them and im thinkn bout gettin one. is it the kinda bike im gonna ride 30% of the time and work on the next 70% or the other way around i dont have a whole lota money so i dont want to keep on buyin parts and be workin on it all the time. let me here somethin from every one i want some of yalls opinions. thanks.