Hi, I am debating whether to put a Pro x piston or a Wiseco in my CR125. Im building it to sell it to a friend who is gonna learn how to ride on it. Not beat the shit out of it or MX it, ride up and down our state park and learn the feel of the bike. I was thinking more towards Pro X because he dosen't know much about the right warming procedure and such, and its a little bit cheaper and its a cast piston. Any input? What would you use and why?