Chucky,
I agree. Actually, I hate SQ. I always have. SQ is, IMHO, one of the reasons that quad failed. I've said it here before so eye into the top of you head for those waiting for it, but more average Joe's bought low cost quad systems in the early '70s, systems with no logic in the decodes, but receivers and decoders with SQ logo's on them proclaiming that SQ was the rats ass. When they got this shit home and set it up, it was "What? Where? Huh?" Their cheap little Q8 sounded amazing quad-wise, but their investment in SQ LP's did little more than the stereo LP of the title run through the same decoder.
Early disappointment led to negative vibes and a lack of interest in something that, other than 8-track, the average Joe could not hear a major difference. CD-4 came along with the higher cost and yada-yada-yada, but really, the good decoders like the Lafayette and the later Sony SQ2A's and such were late to the market, with the Tate's and AS&IC showing up when the records stopped and the quad sections disappeared.
IMHO, the SM2 does a fantastic job decoding my SQ LPs, and the only reason I posted the above was to show that there is some sort of difference, be it slight, so that some folks on the fence get multiple reports on the unit. What you guys have done with a 40+ year old technology for the price you are charging is honestly a miracle. Face it, in the '90s, most of us threw in the towel and many threw out their quad stuff. And here we are 50 years later and we're getting quad stuff rereleased on SACDs and a honest to God working SQ and QS decoder for under $500 that is very cool.
The SM2 almost, and I mean almost, makes me like SQ. Almost.