Sharpness is virtually infinite, but it needs to be tuned for the task. You can get to a point where it's too sharp, and it just dulls faster. That applies to anything that cuts. There's also a time cost. Sharper takes longer. I don't stress it. I'm not racing or anything, and I'll be sharpening again soon anyway. I do a competent job, and there's certainly room for improvement, but it's good enough. IMO, better than good enough is wasting time.