My wife and I have owned a '98 RC (twin beds) since March. I have found a lot of features I like and some things that I wonder about. Our Rialta had 60,000 miles on it when we bought it and had some mods done already. I have installed an automatic transfer switch module and an outside plug-in for the shoreline cord, much easier than messing around in the trunk plugging and unplugging for either power source. The galley counter top had been replaced, eliminating the gas burners. We have an induction hotplate instead. It frees up the counter when not cooking and the induction cooking is really nice!
Mechanically the biggest mod so far is a transmission cooler with a thermal bypass for cooler weather. Automatic transmission like a certain temperature range, not too hot, not too cold. I have spent a lot of time on the Generac generator. It finally runs reasonably well. One thing I have noticed is they put a "pusher" fuel pump right next to the generator. It should be mounted close to the fuel tank, oh well.
We are really enjoying out "new" Rialta!!