Even without, you're expected ACC is +20 just from maxing it. That, alone, defeats Kitone's built-in +15EVA. The rest can be up to DEX/Luck vs AGI/Luck. I guess what I'm trying to say is Critical might be the best type for this ring... when you can max it out. If you can't max it out, Aim would be the more reliable build since you'd still require extra ACC wherever possible.