As a fly tyer I use alot of 6/0 and 8/0 thread Uni brand. I bought a bunch of the 210 flat waxed and on some materials especially squirrel it works better than the Uni 6 adn 8/0.

For everything else I really don't worry about it cause I'm so used to using it. If all your tying is the stuff you listed stick with the 210 denier flat waxed and you should be fine.

Here's a chart on it Welcome to Wapsi Fly, Inc. - Thread Denier comparison Chart