Oh, you were talking to me?

Originally I'd been really happy with the supertrees when they were flocked, and I feel like, so far, they're the best bet for making lots of winter trees while keeping your sanity, but I do agree, the trunks could use some work in the thickness and proportion departments.
I think they do an OK job of representing "trees", but not so much of representing individual real trees. I hate to say it, but if you want GOOD trees, go dig up some year or so old N Scale Magazines. I know we all poke fun, but Bob Hundman's "thing" about trees really did yield good results.
I wish I had the patience to do them.
As far as the super sage goes, I believe the way you're supposed to use it is to make trunks out of it, then glue on bits of supertree to make the branch structure. I don't know if I'd have the patience to do that, and I don't know if I'd be able to get them looking good enough to look BETTER than the supertrees alone when left bare. But if you're going to flock them, give it a shot.
I also think there are probably some real plants out there that will do a better job. Sadly, I just don't spend enough time outdoors to see anything.