So I received my high CRI SST-20 recently, it's my first HDS as well as my first rotary light. I probably won't say anything that hasn't already been said, but I wanted to share my impressions.
The build quality is superior to any light I've ever seen, I'm looking at HDS as like the Rolex of flashlights. The Acme threading feels rock solid strong. I'm happy that my light tail stands 100% perfectly, that was one of my biggest concerns.
The tint on my sample is simply exquisite and the beam itself is the best I've ever seen. Nice sized hot spot with plenty of spill. I use my lights every day at work and "only" having 225 lumens is never an issue. I love having so many low levels as I'm a fan of the sub lumen, but personally I'd have liked .01 as the lowest level but, I'm more than satisfied.
I'm not a clip or holster kind of guy, my lights live in my pocket and while the HDS is heavier than any of my Zebras, I hardly notice it's there. I think I'll do something similar to what RCS1300 does with a lanyard and tritium FOB so I can find it for late night bathroom trips.
I'm completely satisfied with the purchase, If anyone reading this is on the fence about buying a HDS light, just do it.