Questions regarding the choice between the ATPS (Advantage Tactical Pyramid Sight) and the ATDDS (Advantage Tactical Dark Diamond Sight) continue to come in.
The below paragraph in quotes is what we originally said. Upon more customer feedback, we have added two additional paragraphs
"Our Dark Diamond sights (ATDDS) are but a few months old. So far, it seems that those with the most compromised vision go for the Advantage Tactical Sight, while those with moderately compromised vision as well as those with more average vision appear to lean towards the ATDDS sight. As I have recently said on other posts, I am mostly shooting the ARDDS sight these days. For me, though the difference is not huge, I seem to shoot the ATDDS sight a little faster without compromising precision. I did need some learning curve time, when transferring from the ATPS to the ATDDS."
Currently, we have found that more than the idea of which is better (still relevant question), one should concentrate on purpose. The ATDDS is for those that want to make a good shot in the dark with a charged DD front sight. Both are quick and precise in daylight, though some might say the ATPS is slightly more precise, while the ATDDS is more beneficial for the lowest light shooting. The ATDDS is a very front sight oriented system -- see a diamond in daylight or darkness and engage. It does seem that the most vision challenged -- legally blind, those suffering from macular degeneration, and those with quite pronounced vision challenges in general -- lean toward the ATS.
I am the inventor and patent holders on all ATPS and ATDDS sight systems. These days I have switched over to the ATDDS on all of my guns, other than a few. Though I am quite astigmatic and far-sighted, my corrected vision is not bad. I seem to be a little faster and just as precise with the ATDDS. That being said, a fellow near sighted prefers to see a big pyramid and only shoots our ATPS. If you have decent enough vision, think about the attributes of each system, then choose. If you choose one and decide to switch, you may return an undamaged sight for swap.