The "best" one is the one you like best. Everyone wil have his, or her, "best" of anything, but it will be based on personal perference, NOT any hard facts. The next Dornbracht fitting I install, will be my first one, other than a couple I have repaired.
FYI - I just brought home the Moen S6320 rain shower head and installed it in my existing shower and it seems to work like a charm. Even better, when you remove the restrictor gasket.