I have 24' no slide class C. I wanted minimum size possible but with the following: At least 40 gallon fresh water with gray and black tanks proportionate. Six cubic foot double door fridge. Both propane oven and microwave. Spacious dry bath. Dedicated sleeping area and table suitable for work area.
At one time I had van based class B. My current C will not generally fit entirely in one parking spot. I generally pull through two spaces at the rear of shopping center lot. I can usually deal with it with minor degree of hassle. But it does fit in nearly all campsites even smaller ones. As mentioned the handling is truck like with the bonus of big sail area. E series class C units do not handle car like or "well" by any stretch of the imagination, even after many expensive modifications. They are pleasant to drive on good roads in light or moderate traffic, with light winds, at an easy pace.
Concluding-I'd weigh priorities. How important is it that it will fit in one parking spot? How important is tank size, fridge size etc? Must have features? Trim and easy to drive? RV purchase tends to be a compromise of competing factors.