I'm 6'-5" and 280 lbs and the Mustang HIT is very comfortable. As said before, they are expensive, but the trigger mechanism is rated for 5 years (most are supposed to be replaced every year). Definitely shop around online if you don't want to pay BPS or Cabelas prices. I found mine 2 years ago for about 30$ less incl shipping. I wear mine in the middle of summer and don't even notice it being there. Definitely worth the investment IMO.

Joe