Great Bike!! I'm a +1 on the amsoil saber at 80:1. I run VP109 because I like consistency and no alcohol. That being said, the 250 does not have high compression and should run on premium pump gas. I loved my '11 250, it was very smooth and had extremely predictable power. My '12 was a great bike (still is with a new rider)also.
74 TY 80, 175 and 250 no longer at Brewtus's house
95 Sportster 1200
13 Factory Beta 250