here in idaho it is becoming very common to find 10%e everywhere the good thing is AAA is compiling a list of stations that do not use it for guys like us that dont want to use it.
Have not noticed it in awhile, but it seems that here in Vegas its only 10% ethanol in cooler months. I want to say Oct-March? I have seen something about oxygenated also.
In Illinois, that is all we can get and have had that for more than 10 years. It has little to do with power, it just drops the MPG. It won't hurt the bike or cars at all. Now, do NOT try e85, that will cause all sorts of problems in your bike or car isn't made for that. 85% ethanol is very corrosive and you need special equipment to run e85.
I've been working on a project for my companies retail fuel stations and the pros for ethanol is that it is a higher octane (so if premium is required, you can run mid-grade and be safe). It adds about 1-3 points of octane. The downside is that is doesn't burn as clean which decreases your mileage a small amount. Not bad, but knowing the facts helps...