I have this itch to take a small bike( i wanted a 250 but have had lots of resistance to that) and mod the heck out of it. Have it be a sleeper... still look pretty much stock but be able to blow the crap out of bigger, heavier bikes. I've been told that it would just take waay too much time, work, and money to do this with a 250 and I'd just be better off buying the 500 and starting with that. What do you guys think?

 

which one do YOU have experience with?