Opinions on lightweight portable inverter/generators

I have two 2014 Yamaha 2Ks. Other than cleaning out the carburators and oil changes I have done nothing to them. When we are camping alone I will leave one of the them running on Eco all night long to run a box fan for white noise, charge our phones and devices and provide power for the Keurig in the morning. I alternate which one runs each night. No idea how many hours are on them but would guess its in the hundreds.