No reason to debate......they are both fun.

In the SW pattern has started to decline in numbers attending while IMAC has ballooned. Also alot of flyers use IMAC planes to fly 3D and its bragging rights to have a large plane at your home field.

I fly both, I own both. I enjoy both. IMAC was more fun for me for 3 reasons.

1. Unknowns in IMAC
2. cost of glo fuel vs gas (without having to store a 55gal drum)
3. Number of competitors (had 15 avg in IMAC and 4 avg in pattern)

But if more folks showed up I would fly both (I did in '07