Based on a survey of the Malt Adovcate's review of whiskies in this respective category, BlackBull 30 is leading the pack in value and quality

Chivas, 25 year old, 40% Price: $300.00 (MA Rating 87)
The Antiquary, 1977 vintage, 46% Price: $300.00 (MA Rating 87)
King’s Crest, 25 year old, 40% Price: $125.00 (MA Rating 90)
Dewar’s Signature, 43% Price: $200.00 (MA Rating 92) a 27 yr old blend
Black Bull, 30 year old, 50% Price: $200.00 (MA Rating 94)
The Last Drop, 1960 vintage, 48 year old, 52% Price: $2,000.00 (MA Rating 95)

Oh, and Paul Pacult's Spirit Journal rated it 94 points - grab that by the horns!