This wine is only now becoming approachable. Old Block is a massive wine that will continue to improve in the bottle for at least a decade. Expect concentrated black fruit with obvious chocolate and a touch of spice; velvety smooth tannins and a lingering aftertaste that must be experienced to believe.
I just opened the '98 and after 13 years, it was absolutely perfect. Worth every penny that you spend! (northof9finewine, Feb 2011)