Well, it would help if you are more specific on your model.
Our RV is our first and it just about perfect for us. We have a toad, which enables us to scoot around, buy groceries, go fishing, etc. without taking the whole system everywhere.
Storage is always an issue. No matter how much you have, its not enough, so you have to be creative and be merciless on eliminating things you don't need for each trip.
Also we depend on using showers in the campground and we use our shower space for storage.
Having three doors is sometimes a very nice thing.
Most that I know of have a very small TV that is incoveniently placed for viewing, but I solved that problem by going big and mounting on a swivel.
A class C will certainly have upgraded appliances over a TT.