I started out with a Yamaha 3600W with remote control. I soon found that it takes one of my John Deere tractors to load it in and out of the truck bed and once at the campground I have no way to unload it if I want to go somewhere in the truck. I now have the Honda's with the parallel kit. They start easy and will run my 15k A/C on econo mode. I set them behind the TT and secure them to the bumper with a security cable. I also bought the Berg extended run tank.
I highly suggest that you buy a brand that can be serviced locally (unless you can repair it yourself).