HDS are priced the way they are, because they are built in USA, using USA labor for the machine work.

They actually have poor aesthetic quality control, uncentered emitters are not uncommon, cracks in the reflector are typical, some of the Rotary dials are gritty… etc. HDS claims these factors do not affect the beam in actual use. I disagree, in fact, even with a centered LED, HDS have a ring in the outer spill, and a hole in the middle of the beam at extreme close range.

The fan boy factor is very large in the HDS arena. This makes them pretty easy to resell, sometimes for close to what they cost, if they happen to have a special emitter.

HDS in the past were mostly Low CRI and had green tint to boot. Now is a good time though, Hogo has sourced some truly exceptional LEDs, the best of which imo is the N219b 4500k 9080.

It is also possible to modify an HDS emitter, here is a thread about how to do it:
HDS xp-g led mod bansuri

I bought an HDS rotary, I wanted to try the Rotary feature. I do not like that it is not smooth ramping, it jumps up in hops. I much prefer my RRT-01.

otoh, the HDS has a lot more complex programming options, if you dont mind clicking a bunch of times. As a flashoholic, I dont mind clicking, for fun and entertainment, but my RRT-01 is much easier to use, goes lower and higher than my HDS, and has smooth ramping. Plus my RRT-01 is compatible with 18350, so double the battery capacity…

every light has its pros and cons. In the case of pocket clips, the RRT-01 clip is deeper carry than the HDS clip options. With the possible exception of the HDS universal clip, that everybody agrees is Fugly.

The HDS is designed for use in a cave. 1/2 of the 24 lumen steps are below 2 lumens. I find this not practical, even though I like sublumen levels.

now to try to also be fair to say things the HDS does well… It has a very tight hotspot, which means it can use much lower lumen levels, than other lights with a larger hotspot.

my unconfirmed preliminary impression is that the HDS hotspot is half as large as on the Folomov, and the HDS only requires 1/4 as many lumens, to illuminate a small target… I like having the small hotspot, as part of my selection of beam types.

there is a lot of hype about HDS too… for example, that it can survive being hit with a shotgun. This is true, same for other brands, they just dont test them for that. HDS is also EMP proof. Same for other brands.