Vinous rates this potentially the best Relentless yet:
The 2016 Relentless is every bit as stellar as it was last year. Silky, nuanced and beautifully persistent in the glass, the 2016 is super-refined. A natural tendency towards extroverted power is nicely tempered in this super-polished and highly nuanced Syrah/Petite Sirah blend from Shafer.
95+ from the Wine Advocate, too:
Blended of 90% Syrah and 10% Petite Sirah, the deep purple-black colored 2015 Relentless has a total rock-star nose of flamboyant blackberry pie, plum preserves, mulberries and licorice scents with hints of Sichuan pepper, hoisin, Indian spices and smoked meats plus a waft of raspberry leaves. Very big, rich, full and decadently fruited in the mouth, the palate packs in black fruits and exotic spices layers with a firm, rounded tannin frame and just enough freshness to carry off the long, opulent finish.?
A hugely rich and imposing vintage of this always imposing wine.