2019 Cullen Diana Madeline Cabernet Magnum 1.5L, Margaret River

Deep red colour with strong purple reflections. The bouquet is fresh and youthful but surprisingly complex in its youth, revealing violet, blueberry, raspberry and any number of other berry fruit aromas, cherry and dark plum, too, with oak influences evident but discreetly tucked into the wine. It's full-bodied and firm, the tannins perhaps a little more grippy and assertive than usual in this wine, the structure formidable and undoubtedly will endow it with long ageing prospects. Great intensity, power and drive through the palate, the finish long and super-satisfying. A very concentrated DM. It can be enjoyed now but should be cellared for best results. (87% cabernet sauvignon, 7% merlot, 3% cabernet franc, 2% malbec, 1% petit verdot. Matured in 45% new French oak for 15 months) 

98 points Huon Hooke therealreview FEB 2021 2023–2049

87% Cabernet Sauvignon, 7% Merlot, 3% Cabernet Franc and 2% Malbec with 45% new oak. 2,350 dozen made.

Incredible power and concentration here, and yet, still lithe and so finely wrought. It’s ultra-mineral in feel with iron and dense graphite tannin, but perfumed and spice-laden too. The quality and feel of tannin here is something quite extraordinary. Plum and dark cherry, dark tobacco, whiff of empty chocolate box, superb length of flavour. Essence of Cabernet. Essential Cabernet. We’ve never had it so good.
 
98 points Gary Walsh winefront.com.au Feb 2021 Drink 2026 - 2050 

Cabernet sauvignon, merlot, cabernet franc, malbec and petit verdot; matured for 15 months in French oak (45% new). Superb colour, the bouquet a wondrously complex mix of cassis, earth, tapenade and black olive, all fused into a magically woven palate with tightly furled tannins.