Certainly by far the best NAS whisky I've ever tried. Despite 48% vol. The alcohol is almost creamy soft integrated. No trace of youth - it looks more like a set older whisky> 18 years. Lots of vanilla, with already noticeable oak and a perfectly integrated sherry barrel influence. Everything rather in the dark direction with complexity, which brings only the age with the time. The typical Glenrothes earthiness comes from time to time to the fore.
Very good price / performance ratio. You can buy it without hesitation and have a lot of fun with it. I know some whiskys> 18 years, which I would leave without problems on the shelf. Again, something learned: When NAS is done with brain and mind conscientious, it can also get really good stuff around.
I remember the old Royal Lochnagar Selected Reserves. Unfortunately, it's not easy anymore and cheap to get. Rightly!