Snow birding is not the same thing for all people.
Figure out what you really want to do BEFORE you shop!
My wife and I go to Florida for four months every winter. We stay in state parks, COE parks, and USFS parks.
We move often-every 10-14 days or so.
With all that said, we have a 20 ft Hybrid that we totally LOVE!
It is easy to maneuver and fits in virtually any camping site.
Many folks park it and sit all winter so maneuverability might not be so important.
ALSO - since we are living in our camper full time during those months, a FULL SIZE refrigerator and a stove with an oven were a must for use.
HTT: 2007 R-Vision Trail Cruiser c191
TV: 2010 Nissan Titan Pro4X Crew Cab