2017 Cullen Diana Madeline (Magnum)

98 points James Halliday, Halliday Wine Companion
Top 100 Wines of 2019 and Special Value Wine  
A wild-fermented Bordeaux blend matured for 18 months in French oak (40% new). It has waves of complexity, changing shape as the luxuriant cassis swells on the mid-palate, then finishes with ripe, textured tannins. The overall freshness is perfection. Drink by 2042.  

97 Points Huon Hooke, The Real Review
Very deep, bright red/purple colour, youthful and concentrated, the perfumed bouquet showing nutmeg, walnut, savoury and oak-tinged, with discreet violets and berries in the background. The palate is full-bodied but elegantly-styled and tightly-structured, with abundant firm tannins. Intense and focused, it's a little closed at present and needs more time. If you pour it now, give it time in the glass (or decanter), and you'll be rewarded. Drink: 2022–2039.

97 Points Gary Walsh, The Wine Front
Blackberry, blackcurrant, a little nougat oak, and plenty of violet perfume. Medium-bodied, cool and svelte, flows along beautifully, acidity is pitch-perfect, tannin fine but dense and toothsome, and the finish is so very long and composed. Tobacco savouries add complexity. It's a wine of charm and grace, and such wonderful perfume. Drink : 2022 - 2037+.