I still am not clear on is the difference between the two. I went to both sites. There is actually stuff about Pattern on the IMAC site. I'll make it easy for someone. I have seen Pattern planes I think. they are small and not scale in design or appearance. Correct? IMAC planes appear to be scaled down versions of real aerobatic planes and usually 1/4 scale size and larger. Correct? Do both types of competition do the same maneuvers? thanks. come on I know someone is dying to help me out here.