This wine is a bit older than the Saint Esprit Cotes du Rhone, and it's 100% rather than 75% Syrah, but the two wines offer a good comparison/contrast in terroir and winemaking.
The color is a deep ruby, very similar to the Saint Esprit as they are viewed side by side. Smells are also similar--blackberres, black plums, dark cherries plus a herbal lift that is extremely rare in an Australian Shiraz. Aromas are bright and fresh, probably showing their best right now since this cuvee is not a wine for long-term cellaring. On the palate, there is a full range of fruit flavors plus cassis and black pepper. A deeper wine than the Saint Esprit, at least at this stage of its development.
Mount Langi Ghiran's regular estate Shiraz is a serious ageworthy wine, the equivalent of a French Hermitage, that sells for $35 to $40. It is, in my estimation, one of top two or three Australian wines. Billi Billi also comes from estate-grown grapes, but presumably younger vines, and is made for earlier drinking. I bought this at Sam's in Chicago for about $12.