The "best" RV is one that has been carefully maintained, and preferably stored indoors. Branding isn't all that important, since they are ALL a collection of components made by other companies, and assembled at the RV factory.
I agree with others - for full-time living, a trailer is the better way to go, because repairs won't leave you without transportation.
Also research where you plan to park it - many places like state parks, have limits on how long you can stay - and in the winter in FL, campsites are hard to find.