Advice on a Class C sizes..... 26' or 31'

Someone in a campground said that Class A motor homes, no matter how big, are best suited for 2 but you didn't say Class A or C. When we were looking we were also looking for that size range. Our must-haves were a standing walk-a-round bed, couch and dinette. We found that can't get all 3 in 26 ft. but you can with 30 or maybe 29. We found a 30 ft. Class C with 2 slides (bed cross wise in rear) and it works out really well. I would prefer 2 to 3 ft. shorter with 2 slides which are out there and might give up the dinette. But even a 25 footer is too big to drive around sightseeing without towing a vehicle.