I've had good luck (so far) with the Big Agnes products.

I have an uninsulated pad for summer, and an insulated air core pad for "winter" (I'm in the mid-Atlantic - we don't do winter like the Rockies and Alaska).

I bought 25" wide pads (before I saw the light - now I'd probably buy 20" short ones) and am stuck with them for the time being. Unless you and your fiance want to be plastered together while you are stinking and sleeping, a 25 inch wide pad is NOT wide enough for you to share unless you are of smaller stature.

I am also a side sleeper and have had good luck with this set up - so far - but I am a novice backpacker compared to lori and this gear has not been used hard enough for long enough for me to tell you how good it REALLY is.

I'd private message balzacom and ask them how they work out their sleeping arrangements, as he and his wife have backpacked together for YEARS and sleep on the ground.