I have a Champion 3500 will power everything in my fifth wheel (15k ac) I typically run my frig and hot water heater on propane and have had no issues this Ginny cost $300 when bought and has over 400 trouble free hours on it when it goes I will drop it in the trash and buy another.
If sound is an issue just dig deeper into your pocket and spend more, caution your mileage may vary.
Good luck!
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