This is the burliest harness we know of. When you look at Ammon McNeely's Yates Shield harness after over a hundred days of big wall punishment, it is still going strong. This is because the webbing is two inches wide when many manufacturers use one-inch. Everything that can be reinforced is. The harness is also nearly as comfy as they come. We think the Metolius Waldo is a little more comfortable, but not by much. With two waist buckles, you can always get the belay loop centered.
You can remove the leg loops for sleeping. There is a giant burly haul loop in the back for clipping extras without even looking.
This harness is made in California by a company dedicated to improving big wall gear. They respond to feedback and have great customer service as demonstrated here.
This harness is the heaviest we tested. The two big buckles on the waist and wide webbing really add up. The extra hammer holsters are useful for some, but for others they just add bulk, which makes this harness less comfortable to sleep in and tends to get it hung up in chimneys.
For a harness that has it all, it might be nice if this came with two belay loops. If you order directly from Yates you might be able to ask them to add this.
This is for burly multi-day walls. It also would make a great course-setting or rigging harness. Ammon McNeely sets one-day speed record on El Capitan in this harness ever year. That said, when I climb with him on a speed ascent I prefer a lighter harness.
This is the most expensive harness but also the burliest. So the long-term value is there if you climb loads of walls. I have never seen anyone wear one out. You will burn out of wall climbing before you burn this harness out.
Yates Big Wall is the most beefy harness on the market. We think it is a little overkill as it is heavy and takes a while to put on and adjust. But if you want the absolute cushiest harness ever, you should check this one out. Pass The Pitons Pete has spent over 400 days on El Cap in this harness and thinks its the best out there.