I've been using Big Agnes bags and pads since 2001 and they have treated me very well. When I first read about them I was a skeptical of the concept, but after taking a couple bags and pads out for a demo, I decided the integrated pad is a pretty sweet deal. The whole operation just feels more like a bed...somehow more snug.
They have two types of pads: one is the same as a Therma Rest (self-inflating foam) and the other is called the Air Core pad and it is much thicker and you blow it up. At first I was partial to the self-inflating pad, but now I prefer the other...it's thick and really comfortable. Also, they recently came out with an insulated version of the Air Core pad that is supposed to make it warmer (I haven't tried this, but I want one).
When I roll on my side the the pad doesn't lift (my bags are roomy), but if you like to lay on your side in a fetal position the bag won't bend with you like a standard bag...instead, you bend inside the bag...more like in your bed at home. I don't think its a deal breaker...just something I've noticed.
I have one style of Big Agnes bag and pad at
skymountaingear.com, but I can get all their products. If you're interested in any of their products, let me know. Remember BCP members get a 10% discount on all purchases and it helps pay for
shortfield.com.
Mountain Hardware makes great gear and I'm sure you'd be happy with one of their bags too.