I've been using S&W fuel for over 20 years, they're a small company out of Eastern PA. I use the 20%, never an issue with quality or consistancy. I've put at least 10 gallons through an OFNA Violator before a complete tear down, and at least 6 through a Jato3.3, and that is still going strong.

I didn't mean to ressurect and old thread, but I feel this is relevent.