i have only used leathermans. i had the supertool model. i broke the pliers, but i misused them, leatherman sent me a brand new one. i ended up losing it, but i bought another leatherman model. they are a good product, but like i said, its the only kind i have used.
for your kit...i would throw in some compressed guas (spelling?) in case of a large wound. an ace bandage to help with pressure would be nice if you have room, but tearing a shirt or something and tieing it will work too.