I wouldn't consider another oil either for my Chinese 2 strokes...or computer cooling fans. Seroiusly, I've been using Opti-2 for several years in many engines. I break in almost exactly as Map does and I've yet to have a failure of any kind related to lubrication. My engine supplier, a neighbor and friend tells me he won't warrantee his engines using Opti-2 and I tell him its okay because I know the vendor where I get my engines. He shakes his head and walks away.
After almost five years I've never had to return an engine to him. Maybe some day he'll see the light.