For the price - I prefer 2 - 2000W generators. I have the champion inverter 2000w. Most of the year I can get by with only one to top off the batteries while the kids watch a movie. But during the summer I can take both, hook in tandem and run my ac. They stack up nice too, and if you find them on sale they will be no more than the 3500 model - that is twice the size. I don't know if you have rural king (stores) there, but they usually have the best prices and every year for black friday sales will have 20%-25% generators. I bought each of mine for under $400.