phenix all the way and 9 dgers out of 10 will reccomend them too, phenix has patented technology in their straps that take all the weight of your bag feel like a pound or 2, its pretty amazing actually, plus phenix is the only strap on the market that give you the option to have a sternum strap, just a bit more pricey but worth it, as a matter of fact, bhuff is selling black phenix quads in the marketplace. i had lat 64 straps before and what a difference when i broke down to get the quad shocks, phenix all the way butch (oh and as for durability, i have seen quad shocks being used for 5 years plus and still in good condition)