I love the 96 octane VP-C9 and run it in all sorts of toys and lawn equp. It's available locally at a pump too. I also recently tried the Sunoco Optima AND 260 GTX (non ethanol) 95 and 98 octane respectively.
In the end, the C9 seems like the best choice.
Claims that "race fuel" won't make more power are untrue, if only slightly. It's clear that everything I own prefers VP-C9 over ethanol free pump fuel. I get higher RPM in my blowers, slightly higher top speed on my Polaris ATV and better overall throttle response in everything. We even use C9 in the Stemme S-10 motorglider, which has a turbocharged 4 cylinder 115HP engine. The Glider absolutely LOVES the C9.
A quality fuel is well formulated and will provide consistent results. There really is a reason so many of us insist on quality fuels.