When I was married we had both double and queen size beds at various times. Now I have a double. Since I'm still very large and have 3 medium size beagles, it makes sharing the bed interesting. The dogs generally end up lined up parallel to the width of the bed then backed up to me; If I get there first, I get about 1/3 of the bed; if I'm last, I get to grab for whatever space I can. As for bedcovers, I can't even explain the process except that the bed linens get changed several times per week.
From my perspective get the smallest bed you feel comfortable in. Unless you have a very large bedroom the space saved can be used more effectively. Joyce in Delaware