I know this is an old post but I was interested to hear peoples feedback that have used these mini kegs and the CO2 tap. I have the same tap for my mini kegs and although they pour a nice beer with a good frothy head that lasts the actual beer seems to taste pretty flat.
I guess this would make sense seeing as you can't force carbonate the beer as well as in a bottle as a result of only being able to use half as much priming sugar.