2K Honda, quiet, pure sine wave, idles in eco mode, powers everything selectively but well, that is a loud 4K that only runs a few minutes a week to fill up several 55 gal drums.
Some electronics/phased shift motors will not run well on cheap generators, that discussed in other threads. A Honda inverter based genny will run everything ..has commercial grade sine wave, some say a bit better than some commercial.
Gave up on big gennys, way too much gas. Me, 2-3 gallons a day running 24 hrs a day though with selective running and deep cycle 440 amp-hr batts, can use as little as 1.5 gallons/day to run a small stoker 24/7 and everything else, Hard to believe? Its all in the strategy of power management. Objectively though, I'm not running any welders or air compressors or cow milking equipment.