I'm in between 5'11 and 6' (so depressing, almost made 6...) and weigh in at 235lbs with a 38in pant.
Best IWB's for me have been with a compact pistol, usually a Bersa Thunder or a Glock 27. I've got a bit of chub in the gut and some love handles. I've found holsters that ride low work the best. Since I wear my pants right under my love handles, a holster that keeps the grip low and tucked under and into that handle usually works best for me. I carry at 3 o'clock.
FWIW, comp tac looks good to me and is next for my IWB's.