I have a love/hate relationship with Glendronach. their older 20+ year PX Puncheons tend to be garbage so I avoid those. I prefer younger Oloroso butts. This is 10 years in an Oloroso Puncheon, which is a bit strange, but it's good. Price is high but not outrageous.
Their sister distillery Benriach is better don't @ me
Its all a matter of taste. but I have to say preferring Benriach over Glen Dronach means our tastes differ widely. Though I'll agree that the younger Glen Dronachs tend to be much better value