I have two HS-Ts. I've been pleased with both. The real value I think is finding them on the used market. As others have said, the zero stop leaves a little to be desired in that it's not a true zero stop.
One is mounted on a heavy .308 and it's tracked well out to 900 yards and back over several years. It's been carried on backpack hunts several states away and had a bump or two. The reticle came unglued on a hunt (I had a backup rifle) and would rotate as you turned the zoom ring. Vortex sent me a shipping label and fixed it at no cost -- great customer service.
The other is on a 300 win mag and it's tracked well to 500 yards. I haven't shot it farther than 500 yet.
I think these are good value (especially used) for glass quality and tracking. If you're really wanting to go lighter through I'd look at a couple of other options.