spectrum:
I did see one at the LDS and I didn't really care for the feel of the big plastic buttons.
eh. The buttons seem fine to me. I thought they were a bit oversized until I took my BC into waters where I needed decently thick gloves, then they seemed appropriately sized. Oddest thing for me is that the top button inflates, and the front button deflates.
spectrum:
I did see a recent post where it was appealing to a diver with a limited range of motion.
That was probably me. I love the airtrim; it makes diving a lot more comfortable for me, and I'm focusing less on the mechanics of diving and can spend more time enjoying myself and working on the more subtle aspects of buoyancy control.
Having said that, if I didn't have a limited range of motion in my left shoulder, would I still have bought it? Not sure. There's definately a strong arguement for everyone having similar equipment, so that there's no question that you know how to operate your buddy's gear. Since I don't have a permanent buddy, I'm going to be explaining the airtrim a lot. If I'm ever in the situation where I need rescue, anyone attempting to help is going to be challenged when trying to inflate my BC. Manually inflating the BC isn't too bad (there's a tube that pokes out of the left pocket that you extend and blow into), but again, it's different.
biscuit7:
Here's a note on the Airtrim system... if your air supply is cut off, you can't DEFLATE the bc either.
As the Mares rep pointed out, there is a manual dump (on my Dragon AT, it's on the right shoulder). Huge issue? Hmm. If the pressure I heard it stops working at is correct (100psi or so), your regulator is going to be having issues as well (or will shortly), and you're either on an alternate air source like a buddy's octopus or pony, or you're doing an emergency ascent. Only having 1 of the 2 ways to dump air from the BC during an emergency ascent isn't great, but I know I use both methods of dumping air regularly when I dive, so it shouldn't be too unnatural.