On Razor HD:
I don't have one but have looked through the 1-4x on a range when Scott from Vortex was at the RockyMtn 3-gun match. It was a solid, well made scope. Comparable to my 1.5-6x USO scope. As good as the Swaro Z or S&B ShortDot optically? Not quite.

I've looked at the higher mag Razor's at Shot last year. Under the indoor conditions, they also looked quite good. As they are in the "second tier" class with NF & lesser config'd USOs, my take is they are on par with these scopes for sure. Having met a couple Vortex folks, they definitely take CS very seriously (as does USO in my experience).

And, I agree with your enthusiasm for the PSTs. I think they will be a category killer. The right feature set (FFP, Mil/Mil) with decent optics.
We'll see.

On the diminishing returns of optics quality: I run PremierReticles for my LR rigs. And, have quite a bit of experience with S&Bs. The first tier of optics are definitely worth their $2.5K-$3K+ price tags. From what I've seen in addition to PR & S&B, Zeiss/Hensoldt & March are probably in that class. But, it's hard to convince someone that hasn't used this class of optic that they are worth the $$. Are there good shooters using less expensive scopes and competing/serving well? Sure. But, if you look at most of what is high on the leaderboard at most matches, you see mostly the first and second tier brands.

Military uses: imo, optics technology adoption usually lags what the competitive sports folks are using. For example, look how long IPSC/3-gun users were using red dots and optics before the mil adopted (on the AR platform in particular). Granted, it takes time, requires a higher standard of reliability, the procurement juggernaught, etc. We are now seeing the elite sniper units getting there with PR and the USMC contract, S&Bs on top of others, etc. And also look to other countries' sniper units -- S&Bs mounted on Accuracy International AWs...