We bought a westinhouse 4500 2 years ogo, have over 400 hours on it. Most use was when overnighting to and from destinations and boondocking for hunting and firewood cutting in the national forest.
It is sometimes hard to start, particularly in cool weather, say 40f or colder. The auto choke doesnt work so well. The original battery was too small for more than a few crank cycles and gave out completely when less than a year old. A new AGM with 3 times the CCA fixed that.
Elk hunting with temps averaging around 20f required 24 hr run for a week to run furnace a 1500w heater, cooking appliances, tv, etc. ave. load was around 2300w for the week, burning about 6 gal. a day.