If you dont stale fuel the Honda and Yam, they will run almost forever. In the shops I worked in it was usually the generac and others that came in with electrical problems. If you know that it may be a 1 yr purchase or so and you dont operate it in the higher end of it's available power range buy a generac if you want to save money. If you want it for a long time and tend to run it a little higher in it's power range buy an Honda or Yamaha. Put both names in a hat and draw one.
If you were to change plans and want to sell a generator down the road you will get a higher percentage of return on the H or Y.
The general attitude of mechanics and the owner in the shop was oh god, another generac. I had a 4500 watt or so open frame generac that broke an armature winding right at the epoxy the first time the power went out. It was 2 weeks out of warr they wouldn't do anything. They directed me to a dealer out in the sticks who said well I dont wok on them full time but maybe we can line something up so you can drop it off.
Another thing I have seen my buddy the John Deere dealer do is provide out of warr service for his customers. By HIS I mean people who he always sells stuff to. Here and there he would eat stuff that he just couldn't stomach seeing his customerss eat. He would pop into the computer and see where it was bought and there is a difference of who is first in line when the power goes out and there are 40 generators needing repair.
With the lower Generac price it also does lets you buy with part of your risk calculation being that it's a throw away purchase.