For most of the planes I have built, I have pretty much been able to ignore the differences in covering weight, except maybe for some of the 1/2A or smaller, such as indoor microfilm or smaller outdoor rubber FF. In fact, I have some covering film for indoor from Micro-X that is supposed to be light than microfilm.For most of the sport planes, or even some of the competition planes of over about 350-400 sq in area, a couple ounces in covering weight is pretty much irrelevant, at least to me.

What I miss most is the nearly mirror-like finishes that used to be possible using silk or silkspan and pre-EPA Aerogloss dope. With about 15 or 20 coats, lots of sandpaper, polishing paper, rubbing compound, and elbow grease, one could get a finish bright and clear enough to see one's own reflection, almost good enough to shave with. I've never seen any film covering that can give that.

As I get older, I just seem to go more for speed of finish,and am less concerned with some of the details.