I have 3 Honda 2000 watt generators. I use 2 in parallel to run 1 AC and few other items when we dry camp, this works great. I also made my own extended run tanks. I just use 5 gallon gas cans, rubber fuel line. The cap for the generators have an air valve in them and I just remove that, drill out the correct size hole for the hose diameter into the cap and slide hose through it - it should fit extremely snug. The generators will suck the gas through the line and keep it full for hours.
Now for everyone's question on why do I have 3 generators. I have owned 2 of them for years and just acquired the 3rd one. I am in the process of building a 50 amp female receptacle that will include 3 pig tails that plug directly into the generators 110V receptacle. This gives me 6000 watts (4800 running) so I can run as much as I need in my camper.
Do a Youtube search and you will appreciate the convenience of this. I am not trying to open up a separate conversation as we need to stay on topic for the OP as he was looking for options. This works for me as I had these 2 original generators for years and I know what I have vs. selling them and getting a bigger one.