For 5 stars it not quite enough, because 1 is the integrated foil cutter not great, service quite difficult and you have to usually go to several times the bottle. And 2. I am always skeptical when the tip pierces the cork completely, so far I had it but not in a fragile corks I could imagine that something trickles cork in the bottle, even if the tip is so fine to me quite.
Nevertheless, in total good 4 star!