This might be one of my favorite abilities for Sonic, but there still a few problems. It feels like going down when pressing spin is really powerful, more than the jump button I guess. Well other than that I guess I could criticize the Trails but I don't mind it as much anymore. Overall, it feels great right now, I love you being able to thrust yourself with Custom1 and the control it gives just makes it overpowered, well maybe TOO overpowered. I would recommend a "funishment" factor into the mix.
For example if your faster than a certain speed threshold and hit a wall you stop and stick on the wall for about 1 or 2 seconds and be able to jump off and do the ability again, its like a punishment, if used wrong you may lose all your speed and momentum, but you might be able to prolong your Ring Burst like in Arid Canyon zone by hitting a wall on purpose to use another Ring Burst.