Like the OP, I, too, have actually shot the Heli-m. Don't understand all the bashing and piling on, especially from guys who haven't shot it - and I'm a Hoyt shooter! I would not attempt to shoot spots - indoor or outdoor, nor 3-D, with the Heli-m, but I have to say that I like it. The bow I shot is a 70-lb. Heli-m with a 29" draw length. It was originally set at 70 lbs. and it was honestly a beast to shoot. Drew smoothly, but no valley - even worse than Hoyt's #2 Fuel cams at 70-lbs. We cranked it down to 60 lbs. and it was actually very pleasant to shoot. Still no valley, but I could stay into the shot better. It is quite lightweight and, unlike many of Mathews' recent bows, it doesn't feel top heavy - at least to me.
Until the release of Hoyt's Alphamax, I was never a fan of short ATA bows either. However, consistently hitting a heart-sized target with broadheads out of a 32-in. ATA bow at 70 yds. will make a believer of you. I no longer discount short ATA bows solely on the basis of presumed inaccuracy. If you want an all-around bow to shoot field, outdoor 300, 600, 900 rounds and 3-D, the Heli-M isn't for you. But if you want a compact, lightweight hunting bow that balances well in the hand, has little to no hand shock and is whisper quiet, you're gonna like the Heli-M. I do, and I shoot two Carbon Matrixes and a Carbon Element.