Personally I would just skip both and go with motul 300v. And yes I have used both the Mobil and valvoline bike oils and the motul 300v is the ONLY oil to give my r6 smoother shifting, quieter engine, runs a bit cooler, and even better gas mileage.
I recently went to Laconia running said motul and so glad I did and witnessed all benefits. I believe you do get what you pay for at least regarding motorcycle oil.