Because we were in Moab right at the beginning of the Govt shutdown, we were forced to leave all the BLM campgrounds....(includes Dead Horse park)..... There is an RV park ....we stayed in Pack Creek RV park... it's cheaper but I call it quaint. The owners/managers are trying really hard to succeed. You are back away from traffic and train noises. Arches RV park is a nice one, but actually was hard for a # of us to get our rigs in. They don't have the "slots" at an angle and so you have to make a 45 deg. turn......from a narrow aisle. My one con on Dead Horse is the spaces were narrow. I saw one where the people parked their rig the way they should, but to come down off their steps the ground slanted downhill immediately. Not something I want to do!!!!
All in all, no matter where you camp in Moab, you'll have a great time :) :) at least we did!