I am taking more time to think about this than
@Storrsy does with his purchases.
With small gennys, the advice seems to be buy Honda or Honda or Honda.
Odering a Honda 2kw suitcase, Big enough for home and should do the work/HQ office at a pinch as well , an it would be small enough to move between the 2 buildings.
Still umming about a bigger portable derv unit that’s enough for a welder.
Looking at biting the bullet and going for a Solar PV and battery system for my house. We have a perfect S facing roof, nice external spot for Batteries, and then if I link in a changeover switch for the genny it should give me a robust off grid option.
The current plan is another 10 years in the house so I might even see a ROI.