Some alternate choices. All work well at ratios between 40 and 50-1 in both of your engines. You already know about the Pennzoil at 32 to 40-1. BelRay H1R up to 40-1, BelRay MC-1 at 50-1. Redline Two Stroke Racing Oil at 50-1. Motul 800 at 50-1. Redline, Motul, and Bel Ray products can be found at motorcycle shops. Stihl Ultra at 50-1. Echo two stroke oil up to 40-1. There are more but their names escape me at the moment.

Asking for "the best" oil is like asking which is prettier, blond or brunette. You'll never get an absolute answer. There are a lot of good oils when used at reasonable ratios. Long term trouble begins when the ratios become excessively lean, From 70 to 1 upwards. Some will debate that the preceeding is not always true and some would be correct. Depends a lot on how you run and treat an engine. Some that engage in that debate haven't had an engine long enough to validate their assessments. One thing's for sure, you can't hurt an engine by using a little more oil in the fuel mix.