I think this question would have been better asked in an email instead of in a public forum, so I'm not sure if you have an agenda. That being said, I'll try to answer - Hopefully without starting a shitstorm.
Until very recently Springco had virtually no interest in the .308 market whatsoever. Now, with some slick marketing they are all the rage in some circles. "Flavor of the month" probably has a different connotation for us 'seasoned' folks than it does for the younger crowd.
My experience is that the ArmaLite #EA1095 spring is the best spring available for .308 rifles and also works just as well in .308 ARs with 7.750" carbine buffer tubes. Springco makes good products, and I'm not disparaging them. But I have tested them side by side and I don't believe their 'red' spring is better than the ArmaLite spring for the applications that I'm concerned with.
Over the years I have been solicited by numerous manufacturers that wanted me to carry their products. Some of those products were offered at substantially lower cost (and thus had much greater profit potential) than the springs I currently sell. I choose my product line based on performance, not price, because my customers deserve the very best.
Finally, sharing recipes is an activity that only old women should engage in. >:D