We have a Polar Cub 9.2 that was installed by the dealer. The reasoning was that it can run off a Honda 2000 and it has a lower profile than the A/C unit offered by the manufacturer. We took delivery of the TC 11 months ago, so I assume it's a newer unit. Our Honda EU2000 Companion runs the A/C, but if we want to use the microwave, we temporarily shut down the A/C. Our experience with the Honda 2000 and PC was relatively near sea-level, somewhere between 500' and 1000', boondocking on the Shenandoah River in July. Nice and humid. We spent a week in The Keys this past August, connected to shore power, and the PC 9.2 performed wonderfully. Staying in Daytona for a couple days, the temp. was 100 degrees with a "humiture" of 120 degrees. We were driveway camping at my sister's and there was zero shade. The PC 9.2 kept us very comfortable.
Full disclosure, I've added some upholstery foam for insulation in the bath skylight and a few windows that didn't have storm windows (escape window in the cab-over, pass-through window below the cab-over and rear door window).
'13 F250XL SC gas 4x4 8', Camper & Plow packages, StableLoads, LT285/65R-18 Goodyear Wrangler A/T Adventure, 18x9 Ultra Motorsports "Phantom" wheels
'12 Wolf Creek 850 TC Coleman Polar Cub 9.2k A/C, 90 watt solar, dual propane & batteries, Maggie Rack