We have several friends with Allegro buses, and they all just love them.
We went a similar route...bought a good quality motorhome, and plan to keep the RV long term. Over time, that beats having to trade often, and the better quality rigs are close to trouble free. We've had ours for nine years with one breakdown....a sheared bolt in the engine that caused us to overheat. A tiny repair, and under warranty at the time, but necessitating a 100 mile trip for the beast on a lowboy trailer, from nowhere to Grand Island NE.
We are real fans of the RV Consumer Group. Their info is invaluable in choosing rigs. Some years ago, we rated rigs for them.....they're good folks.
It's no problem to dump even if you are quite a ways away from a sewer connection. A macerator pump and a garden hose will do a fine job, even if you're several hundred feet away from a toilet or sewer cleanout. We've used our macerator in numerous situations, and it's been invaluable. (A macerator is similar to a garbage disposal for sewage.....it macerates it into a slurry that can be handled easily with a garden hose). We've snaked our hose long distances and through windows into a toilet many times, and even when volunteering in National Forests, into vault toilets. A macerator will enable you to dump in a multitude of situations where dumping would be difficult without it. Ours has paid for itself over and over, from it's original cost of $140 (probably more expensive now, as ours is a dozen years old).
LooseChickens