The most under-rated bow out there is the Pearson Stealth and Pearson Z-34. So under-rated it didn't even make your list of under-rated bows! No respect, I tell ya.

Seriously the Pearson Stealth is a sweet bow. I've shot the Hoyt Trykon, Vectrix, Razortec, and Vipertec as well as the Switchback right next to it and I wouldn't trade my Pearson for any of these bows.

It's got an aluminum machined riser, Barnsdale limbs (best out there), hybrid cams, parallel limbs, pivoting limb pockets and an exceptional grip. It also comes with great factory strings (either Vapor Trail or Stone Mountain depending on what year). And the finish is excellent. Not to mention, the Stealth shoots 316 fps IBO and has a generous 7.5 in braceheight.

You can pick them up on ebay for around 350 - 400 barely used.

The Pearson Z-34 is very similar in specs and performance to a Ross Cardiac IMO. Another sweet shooter.

Pearson has got to be the most under-rated brand ever.