I was able to pick one up for an ok price, $42. All the info I have is the manufacture info. It sounds like an excellent warm weather-sleeping pad.
My question is has anyone here used or owned a Big Agnes REM Air Core Pad and what were your thoughts on it?
Thanks.

I've never used the REM Air Core, but i have a BA Hinman, and it works great.

I use the Air Core Pad and it is awesome. It packs down to the size of a Nalgene bottle and is easy to inflate. What really makes it sweet is when you mate it with an Agnes bag. No more rolling off your pad. The bag and pad are is one system.

just bought the insulated version - looking forward to the considerable space I save over my old thermorest. The Big Ag bags are so far great! - I've liked my Encampment bought last spring even with my old thin thermorest.

I used the same pad last year. I cannot think of sleeping on anything else. Infact, I really slept better on it that in my own bed. That could have been the result of a lot of paddling though!

The only thing negative thing that I can say about it is that it can get rather chilly in the low 40's without the insultation. That is why they make the insulation version.