We purchased this on the basis of its status as an America's Test Kitchen equipment review winner and we're glad that we did.  Because it's so different from every opener that we've used there were some minor issues at first.  If the opener has even the slightest variance from a vertical placement to the cork center before you press the button it will cant off at an angle as it screws into the cork.  This makes removing the cork from the bottle a bit more difficult.  It's still a lot easier that a standard corkscrew and very affordable.