Couple of boats I've sailed on owned Honda gennys. Thats the only recommendation i can give. One of the boats was owned by a commander RN, a very capable chap, and i dont think he would have anything not up to the mark.
Expensive compared to most, but they have a fine reputation for reliability, and i suppose thats one of the most important factors.
We've got a 6KVa Honda powered generator. But bought probably 15 years ago for £500. Runs everything whenever we get a powercut. In five minutes, I can get the house switched over to it and then carry on - busy as usual. Starts first time.
In December 2008 I bought a new 2.2Kva Petrol Generator. Its still to this day not been out of the box it came in as I am still waiting for a power cut long enough for me to need to bother. I wonder if it would even turn over now. We live 3 doors from the local sub station which seems resilient to cuts of more than a few minutes. In 2022 I got battery storage for my solar so I doubt the gen will ever be used now.