All the fuel in the US is E10. But no, it is not better. After the switch from plain gas to E5, then E10 (and soon maybe E15
)it started eating the fuel lines and stuff in my car. I had to replace filters, the lines, etc. Ugh. But my bike does run fine with it. I run my bike on 89 otherwise it pings with the slant head. That is the highest grade fuel I can get where I live, I'd love to run higher.