From my B to a C - Recommendations?

After 5 happy years with my PW Lexor, I'm starting my research for buying my first C. I live in Colorado but drove the B to Tampa and will have frequent extended visits here with my dad through the winter, so plan to trade here as I am far from any inventory at home. I'm a research addict and am happy to visit loads of dealerships as well as the Supershow in January. I've seen about a 1/2 dozen units so far, new or used, gas or diesel, just depends on quality,reliability but 21-24', slide optional but prefer not, 80" bed length preferable and rear bed/bath combo desired, vented air, large rear window over bed (we'll miss those cargo doors on the B) Have you owned units like this and what can you tell me about your experience with them? Thanks for your input, I won't make a decision till after the new year so have plenty of time to make a good choice.