Whether or not the generator is a deal breaker would depend on whether or not you use it. I've put only 200 hours on mine, in nine years, not enough to keep it healthy. When not used, the things are a headache.
Those 200 hours were almost all on the road, to keep the house cooler when traveling in the daytime with a full load of people in 90-105 F temperatures, and sometimes during lunch stops enroute. When used, it is a headache, because of the noise, particularly on pavement.
If you are thinking of summer boondocking in the Midwest, South, or Southwest, and want power for air conditioning, you might be able to put up with the noise of an on-board generator, or you might find you need something quieter and more remote.
At one time we had four C's and three A gassers in our little RV club, and I was the only one to use the genset while traveling. Some of them had never run their generators, but it was something they were told they had to have for resale value.