Follow up. I was able to compare the Grangestone 25 to the Royal Brackla 16 and 21. On the visual, the Grange 25 was lighter in color when compared to the RB 16, the RB 21 was darker than the RB 16, as these are influenced by their maturation. Although the Grange 25 is also matured in Oloroso, the influence is light. On the nose, these three are similar. On the palate, the RB 21 has more oak, but the Grange 25 seems more citrus and sweet. So for the price, the Grange 25 is a heck of a value and a very enjoyable whisky.