hey folks i have been running my RCM .5 against the st minnis for about six weeks and have been winning more than half the time and having a ball doing it.I think the longer wheel base and the bigger tires make the .5 easier to control in the air espesialy if you get a little out of shape. but with the stock width arms it isnt quite as stable into or out of a corner as the st looks but it can be well controled if your carfull and smooth with the gas {cant wait to get my arms kit installed} Ive been doing well with my .5 and i think its a better platform BUT my next prodject will be an ST minnie