I have the 2k Honda. Only the one, so we don't run A/C. I like it okay. Resale value on those ie2000 is great. You can own and use one for years for about $100.
One thing I don't see mentioned too often, is the issue of noise and distance. It is nice to move the little gen away from the trailer where we are trying to watch TV or sleep. For that reason I would not like a unit mounted on the pinbox, right outside the bedroom wall. Even hanging on the bumper will result in more noise in the coach, than the same genset would sitting on the ground.
Just something else to think about. Different folks will reach different choices.