I have been using Opti-2 oil which is a synthetic that claims it is a one mix for all. I have several 2 stroke tools that take different mixes and just couldn't see having a couple different gas mixes. I have used this now from 50:1 to 16:1 engines and have had no issues. Wondering if others have used it.
http://opti2-4.com/index.php?dispatch=categories.view&category_id=165
http://opti2-4.com/index.php?dispatch=categories.view&category_id=165