This is a reply to Doc’s comment about the desert prickles beating up your t-rest.
I don’t think holes are gauranteed with an inflatable pad in the desert.
Jeff and I each carried Prolites, and had no problems with holes in our sleeping pads from the desert flora. I will say, though, that we carried them inside our packs for the desert because we had extra space, and we also slept in a tent (which meant both tyvek and silnylon between the sleeping pad and ground). Our gear might not have gotten as much abuse as other folks’.
One cool thing about the Prolites, though, if the hole is on the bottom side, you can patch it very effectively with duct tape! We did get a 1/4 " slice (not a puncture) from something in our pack at one point. Our duct tape repair lasted for weeks until we had some down time at KM to do a definitive repair. It’s not that the repair was hard or time-consuming, but the duct tape worked so well we debated replacing it at all.
I don’t want to be an ounce heretic or anything, but if you choose to carry an inflatable sleeping pad, it really won’t break you to bring along a patch kit. That way, you wouldn’t need to worry so much about getting a puncture. The little pouch of HotBond sealant and fabric patch aren’t heavy, and they’re really easy to use. I just weighed my little kit and it came in at 3 grams, so I think it’s doable. 
As for choosing a pad, you should carry whatever you are comfortable with and that allows you to get a good night’s sleep on the trail. So Early Bird, if you like your Ridge Rest, then carry it, by all means! It doesn’t matter a bit what anyone else is doing. HYOH.
-Jenn
Chipper