Simply the best. Won’t even bother trying the competition. My father and i have been using opti-2 since the early 80’s, racing motocross/harecrambles just about every single weekend. Zero motor issues over the years at 80:1. We use the same mix in our weedeater and chainsaw. works perfect and no second mix for different applications.
I also like how Opti is not sold at big box stores, support local business!