We RV full time. In a gasser. In the 168 hours in a week, we might be actually driving about 10 hours - 5 percent of the time we spend in our RV. The other 95 percent of the time we are parked. Of that 5 percent of the time spent driving, a maximum of 10 percent is spent accelerating up hills or on ramps. In other words, for about a 1/2 percent of the time spent in our RV, our RV is loud. The other 99.5 percent of the time, it isn't. We have been up and down the Appalachians, the Rockies, the Alaskan Range. Sometimes we pass other RVs and semis, sometimes we don't. But we always get where we are going.
What is far more important is the livability of the floorplan. Does it have enough storage (space and weight)? Can I get to the fridge with the slides in? Is the shower large enough? Does it have the amenities I want? Can I stand being in it for three days of torrential downpour? Can I park it where I want to?