RE: looking for input on 80% letoff.
I hunt with a Mathews MQ-1 with 80% letoff StraightLine Maxcam; it's probably one of the smoothest-drawing cams on the market.
Now if you've followed any of my posting at all, you'll realize I'm not one of those "get a Mathews at all costs; everything else out there is junk" guys. I'm just telling you it's a smooth-drawing bow, even for 80% letoff. If you're in the market for one, you'd be wise to at least try it.
I'd probaby steer away from the regular MaxCam on the models like the Ultra Max. Those are much harsher in their draw cycle, even though they're 80% letoff as well.