Generator or no Generator

We have an installed propane Onan 5500 and love it. We used it extensively on our recent trip to Alaska. And no. We feel it did not suck down propane as we only had to fill three 30 lb tanks during our trip (3 months). Because we had the onboard generator, we were able to stay in places with no power. Our favorite campgrounds we natl, BLM, and USFS campgrounds which had no utilities. Was it expensive to purchase? Yes, but we found a really good deal on line and our after market install was quite a bit less than a factory install. We also have a PSW inverter. We had portable Hondas but always worried about them being stolen and since we have a diesel truck, we had no need for gasoline except for the portable generators. You can now get a wireless, programable start for the Onan that us really important if you have pets. We are fulltimers and we are glad we spent the money on an onboard generator.