Winter Storage - Cover at Home or Store at Indoor Facillity?

I used to cover my last 2 thirty foot Motor homes. I think it is better than leaving them in the weather, especially the sun. That being said it is a pretty big job to put the covers on, not too hard to get them off. I now have indoor storage and it is much better! I would still cover if I didn't have indoor storage. If you keep the cover on very tight the damage from chaffing is minimal. What kind of classic cars do you have? I have 3 vintage Chevrolets a '33 coupe, a '37 sedan, and a'48 aero sedan.