Meng Sun wrote a review of Big Agnes Insulated Q-Core Sleeping Pad on July 28, 2013
Familiarity: I've put it through the wringer
So I've had the REI pad first, thought it was nice but kinda heavy and very thin. And I spent the $$ for the T-A-R NeoAir xlite for its lightness, but it's very uncomfortable, I would roll all over the place on the pad and I cannot sleep. I then purchased the Q-Core Long version, and I fell asleep when trying it in the living room. When I woke up, I exchanged it for a long/wide version (I'm 6'1, broad shoulder) for maximum comfort when lying face up!!
It does take more time to inflate than both the REI and the therma-a-rest pad. But it is 100% more comfortable and it is the only piece of gear in my overnight pack that is not super light. Actually if you have a highend Marmot down bag about 15-30F, this pad is bigger than the sleeping bag+compression sack! (I had superlight 1person tent, carbon poles, Arc'Teryx jackets, minimalist cooking stuff, etc) But it's worth it, because you can actually sleep.