Another Sunseeker fan and owner here, a 2300 on an E450. It can be a little small inside when the full family of all four of us go, and no one is small, aside from my wife (I'm 6'/225; 17 y.o. son is 6'-4"/250; 15 y.o. daughter is 5'-8"). Wife and I are in the corner Queen which that marvelous Serta pillowtop, son in the overhead, and daughter on the dinette. we are just not all inside that much for it to make a difference. A planned mod is a swivel on the front passenger seat to add an extra sitting position besides the dinette. That will take care of the only thing that bugs me about the floorplan.
When there is just 2 of us it's a fantastic size. I bought small on purpose because of weight and wanting to avoid the complication of a slide. Occasionally I have second thoughts, but this one at 24'-5" long is a tremendously practical size. We are leaving on a 5 day dry camping trip tomorrow and it will easily swallow up all our stuff.
