Phil, welcome aboard. Not all of us have the luxory of a ten acher spread in Oaklahoma to put a killer garage on.
You have a few to choose from as far as fit and finish. If you want a really snug fit you are looking at a bunch more money. ToyBoxCovers.com out of Winnnetka, CA will make one custom fit, made to order with a couple of different fabrics to choose from, but it will cost you plenty. I don't want to quote them, you want a real price you should call them, but I know for our LE3505 (36 foot Fifth wheel) a coustom cover was $1600. Camping World just has a sale on all types of covers. I could have gotten the one that they offer for around $350. It wasn't custom fit, in fact it was for toyhaulers 35'-38'.
It just depends on what you want to spend and how important the perfect fit is.
02 F250 SD Diesel 4x4, 6.5 lift, Banks ex, K&N, Edge progrmr