I've been using the uncomfortable harness that came with my Summit climber and I'm ready to upgrade. I think a vest is what I want but I'm not sure about a specific brand or if I should be looking at something else entirely. I'd ask my hunting buddies but I'm the only one who isn't invincible. (As in, they think a harness is useless since they'll never fall out of a tree.) Anyone have experience with a vest-based harness system?