I purchased a 185RB Baja, primarily for Burning Man, and it'll live in Fernley, NV. I pick it up on the 24th. I went with the Baja for the larger water tank, 4 jacks, and the ground clearance. I know, the desert is totally flat, but some of the other places may not be (coming on and off the highway, etc). It was a minimal cost difference, and the propane tank being a bit larger is a nice insurance policy, especially if my wife and I start flying out there to travel around. The unit can pay for its yearly storage (or at least offset it) in the savings on hotel rooms if we use it for something besides burning man once a year, not counting if our family wants to use it for trips out there. The trip from Fernly to the desert is only 80 miles or so, which means I'm not sweating the single axle that much. I like the fact that the wall-mounted AC doesn't add to height (desert wind) and that it runs on a smaller generator. Plus, in the 185RB VS the 195RB, the AC is in the bed cubby when the curtain is pulled, meaning I'm cooling less of the trailer if I'm napping, even in desert sunshine. We'll see how it works - my usual tow vehicle will be a 1/2 ton 1500 crew cab. I won't have the chance to install WD hitches and such, so it's just going to be the truck and the electric brakes doing their thing. I like my Prodigy wireless brake controller, since it means I can switch tow vehicles in a minute
Luckily, the towing is just 'up and down' once, with a lot of the trip being pretty straight. I'm also not going to be going very fast - traffic means it's a creep to get out of the event for half the trip or more, anyway. I'll let everyone know how it goes!