It's flavor is much cleaner and smoother than most of it's market equivalents, but it has some unique characteristics. I have always sensed some apple and raisin undertones, and perhaps a little bit of peat. Additionally it has a crisp after taste that is very satisfying.
The Grand Old Parr is a 12 year blended whisky that is as good if not better than any of the other mass market blended whiskies out there. It's presentation is totally unique. It is generally sold in a gold box and always in a square brown bottle with an interesting texture on the outside.