Do you really think you need the independent power? We found that we don't "need" a generator or solar.
For weekend camping without hookups, careful use of electricity makes our single battery easily last a weekend. From Friday night to leaving on the following Monday, single battery power is fine. For a week plus, I usually bring a spare camper battery so I know we have enough power.
Otherwise we plan camping trips at campgrounds with electric hookups, especially if we think we'll want to use the air conditioning. Although having a "full hookup" campsite with septic is nice, I have no problem with using the dump station at a campground so we will choose a campsite based on location and size, not just hookups. A lot of campgrounds around us have "electric only" campsites, or campsites with electric and grey water only drains - which is really nice, you can take long showers!
If I ever do get a generator for camping, I will spend the money to get a high quality and Quiet! one like a Honda. Friends have a Honda 2,000 watt camping generator, and it is just weird how quiet it is.