Pro Airsoft Supplies do a lot of the Condor stuff and Flecktarn for Bulle gear. I have the Recon Chest Harness myself (with Warrior triple mag pouch) All of their stuff is great quality and mil-spec I think but cheaper than other brands.
I'd say the newer ones with front zip are, WAS kit is bomb proof and will last your lifetime at least in airsoft lol. The old gen are a PITA because you need a buddy to tighten you in everytime and help adjust it
If youre settling because of price, try and pick up a second hand one, I got a pretty much brand new 901 with a full compilment of pouches for £36 on ebay a few months back!