My husband and I are retired and live in Florida. We have been looking at Class B/B+ RV's to use for weekends to the Keys and in the summer to visit the rest of the US. My husband's goal is to visit all of the National parks. We have narrowed our preference to the Class B/B+ RV's and have determined that 30' is the minimum we would want. The challenge that we have is how to differentiate one brand from the next. We know that we want a unit with at least a queen size bed walk around, and a comfortable sitting area to watch TV at night. It is our plan to travel 6-8 weeks during the summer around the country. Any help of advice you can share is appreciated.