Ethanol free 90 is easy to find in Eastern NC and costs the same as 93 octane. I use it unless Im somewhere that don't sell it then its 93. The non ethanol can sit a year in my shed and still be good to go.
I cant hate that!! I've owned a few Vdubs including the MKV Jetta I recently gave to my daughter after she lost her Soul. (She totaled her Kia Soul in a collision) She wasn't injured.