This seems to be a pretty good opener with one exception.  It is powerful, quiet, and cleanly removes the cork.  The issue I have is that the point of the opener does not readily penetrate the cork.  It has to spin many times before it digs in.  Sometimes, I have to lift it off and retry.  Once it digs in though, it works well.  I have touched the tip and it certainly seems sharp.  Maybe it just isn't pointed down enough.