Free: Contests & Raffles.
I have the BA insulated Qcore and love it. The only downside is that you nearly pass out inflating it, although I would guess this is a problem for all pads that are thick.
I did more research and talked to some die-hard backpacking aficionado buddies who have used several types of pads and all are now using the therm-a-rest neoair xtherm. So I went with it in the size L. I also found it on sale at Moosejaw for 20% off and free shipping. Hard to beat that deal. Arrived in the mail today so I'll give you all a report after I've put some zzzz's to it. CaNINE :o3