Any suggestions: Top end Cobra, or close to it.
In days of old when CBers were bold and the FCC still trying to regulate there were two top companies, CObra and Johnson, Radio Shack also had good radios, (Their top radio was about equal to Cobra/Johnson #2) and I still have one of those... Next to my Cobra. I like 'em both.
Cobra is still out there, Have not heard from Johnson in a long time, RS now sells Cobra if I recall correctly.
You should pay better attention to the antenna, this is where you get the biggest bang for your buck.
Assuming a fiberglass MH you need either a very special antenna I may some day build (I have the plans and have used one in the past) or a NO GROUND PLANE antenna.. These can work well.. The Firestick is one of the more popular.
You want it mounted high and center if you can but on most motor homes that is not practical So as high as you can without going over 13'6" (Antennas taller than that have a way of becoming shorter than that all of a sudden).
And either have someone who knows how set it up for you or "Tune" it if you know how.. I'm one of those folks who designs and builds some of my own so I know how.