Wayne,
Yep, a good friend has a Premier Heritage 5-15x56 on his DTA, and I've spent some time looking at & through it - not in marginal light conditions, though. Side-by-side comparison late in the afternoon/early evening would be necessary to get me off the soapbox in support of the Sightron SIIIs, but even then, the difference would have to be astounding to make the Premier worth four times what the Sightrons cost. Guess there's more to it than just the optical quality - the Premier has some pretty neat features, and those big knobs make it pretty easy to see the numbers on the dial, plus giving a lot of adjustment per revolution.
I kinda went overboard building rifles after buying a lathe and learning to do barrel & action work, and as a result, I needed more than just a couple of good quality scopes. That's one thing that makes the SIIIs so attractive - I can afford to put a good scope on every rifle. I need to sell off a few rifles - thin the herd, so to speak. If I'd get that done, then I could afford to put a Heritage on the DTA, and not feel bad about dropping the $$$ for it.