Mtnhuntress I really think you should look into the Big Agnes Insulated Air Core. i understand your thoughts about the air cell pads, but this thing is amazing and I've beat the tar out of it and not mention it's light and extremely comfortable.
I just got a Nemo Astro Air Insulated last night. I have only had a chance to lay on it inside but it is fairly light 1lb. 8 oz. and very comfortable. It is basically a more durable and quieter Neo Air from everything I have gathered so far. I don't have a lot of experience with it yet but you may want to check it out, so far I'm impressed.
I have both a Neo Air and Big Agnes inuslated air core. The neo air is sweet and super light but it definitely is a thinner material and I am super careful not to put it on top of anything sharp. The Air Core I've had for 5 years and have beat that thing to hell and it's still holding up great.
Really like my Neo-Air due to the weight, but always watch wear I place it so I don't get any punctures. I did sleep out on some rocks one night when I was hunting dall sheep in Alaska and never got any holes in it.
I found one of these at one of the big camping and outdoors mega stores the other day. About a hundred bucks and only 9.1 ounces. If your looking ultra, ultra, ultra light. This might be it. I've never used one but reading this page reminded me of this thing.
I use the thermarest z-lite and love it, if I'm not packing in very far from the truck, or its super cold outside, I'll put a Cabelas Alaskan Guide air pad on top for added protection. Its a heavy pad so I don't use it much, I'm looking into the BA air cor as well.
Gotta love the BA insulated air core. I love mine and definitely bumps up the temp rating on your sleeping bag.The only downside is there weight. If I was going to buy a new sleeping pad today I would buy the neo air from thermarest. The shop I work for sells both as well.