One in ten people who try the MAC shifter like it. It isn't really the "racers choice", I guess. That would be the Pro5.0, and one in ten users don't like that one so it's a much better gamble. I'd rather pay $120 for a used Pro5.0 on ebay than a new MAC... obviously, since that's what I did. The only good thing about the MAC is the steel lever, but definately not Pro5.0 material- or even Tri-Ax for that matter; which I'd say is equally popular. The only thing I can figure about, since the Pro5.0 and Tri-Ax are so different, is that there are a lot of people out there who can't handle the truth. They don't really want to know what's going on in their tranny, so they get the babiesbuttsoftysmoothsteeda.