less expensive generators typically produce less desirable (dirty) electric. they would be fine for the fridge, power tools, lights, etc....but anything with a circuit board would really like some really clean electric, and lets face it, most things these days have a circuit board. Anything in the whole house non-portable generator would most likely be putting out clean electric. Inverter generators will normally be the cleanest electric, but that will reflect in the price. Figure out what you want to run, and size it accordingly, there are lots of calculators on the web you can use, and get an education on "start up" current. IMO its wasteful to over size a generator, since most will burn close to the same amount of fuel running loaded or unloaded.