Phil:
Yes, the change to the "crystal" knob was also carried out on the dryers. I personally prefer the chrome knob, as I do on faucets as well.
These dryers aren't that damn small. They'll handle what you take out of the washer, and that is all any dryer should be expected to do. Their major drawback is that the lint filter, which is located at the back of the drum, is easy to ignore, so it's likely that you'll have to do a thorough de-linting of any HOH DE806 you find. And as you know, that's a good idea on any vintage dryer anyway, so it's not a huge issue.
I've heard complaints from people who have enormous resentment about having to reach into the drum to clean the lint filter, but they always seem to be the sort of people who wouldn't attend to a lint filter no matter where it was. You've surely seen what happens to Maytag washer filters, which are about the easiest-to-clean design ever made. Yikes.
You, being a responsible and motivated person, will have no difficulty with it whatsoever.