I have the Predator 3500 from Harbor Freight and it will run a single 15k AC unit easily. You can parallel it with another unit to run 2 AC's and the cost per generator is pretty reasonable, especially compared to similar Hondas. And it has good reviews and lots of videos on youtube. They do make a propane conversion and I'm pretty sure a remote start as aftermarket items.
My buddy has the Champion (I think it is 3800??) dual fuel so it will run on propane and he really likes it. So I think you would be good with either. I bought the Predator because I needed it that day and couldn't wait for Amazon. Otherwise, I might have looked closer at the Champion.
