I'm a bigger guy (230lbs, 260lbs with boots and gear). I was having some back issues positioning on a TM with a dmm ring on the bridge. Switched to the hydra and the pain went away. Seems like lighter guys do fine on rings, but I won't climb without my hydra pulley now. And way fewer bridge...
DMM shanks are more comfortable than the standards (6 or 7 year old standard alu geckos, not sure if they changed the shank design). The stirrups are canted forward so the shin cups are pulled off your shin. I had to pound down the rivets a little. I really did not like the old design, chafed...
I tend to lose a fair amount of water weight during the day. Like 10 to 20 lbs. Apparently not uncommon, happens to all the men on my fathers side. I should also mention I'm a large climber (we climb all day everyday) 230lbs at the start of the day. The treemotion saddle I use isn't exactly...