Did a tasting with the '10', '15' and '21'. The '10' is obviously still rough around the edges, but has a pleasant fruity flavourprofile that makes up for it. It has a nice citruszing to it. Very enjoyable. Good value for money. The '15' is spicier and leans much heavier into chocolate and caramelflavours after the extra maturation. Tasty, but a heavier taste. Maybe more for winter. It is smoother than the 10, but loses some of the fun, refreshing zing that the 10 has. The '21' went back a bit to some of the more fruity flavours. It tries to find balance in between the flavourprofile of the '10' and '15'. Definitely nice and I prefer it to the '15', but at the higher pricetag and compared to other brands I'm not really convinced to add it to my cabinet. I really enjoy the '10'. It's the only one of the three that I want to add to my cabinet, based on enjoyment and pricetag.