After I scrolled back to your first post and found that you were relatively comfortable with a 21 ounce pad, I was hesitant to bring up another 21 ounce solution. But.. like Tony above, my date and I recently popped for a pair of Warmlite DAMs, I believe the 22" X 66"ers.
I'm used to frequent waking as I turn from side to side, but on our first night out, I enjoyed an uninterrupted five hour stretch of sleep. The pattern continued through the week long trip. My side sleeping date was just as impressed. She had never experienced the subtle warmth and comfort that the DAM added to ground sleeping. The downside of the mats is a fabric "squeak" or "squawk" as you move on them; but we were usually too deeply sleeping to notice.
I had often thought of purchasing the DAMs, but since we share a double quilt, I was unsure about holding the two together as one unit, and I was uneasy about the integrity and sleepability of the center seam or join. Fortunately, a small roll of self adhesive hook and loop fastened nicely to the seam flange of each pad and securely held the mats as one. The center join is hardly discernible while sleeping. We couldn't be happier.