Easily one of my faviourite vineyards I've ever been to. Fantastic friendly staff and beautiful wines. The 2010 SophiaShiraz is amazing. Keep an eye out for the 2009 TBM Riesling it is soo good.
No trip to the Barossa should be without a stop to MSV. Seated wine tasting, with the mist constantly fantastic wines of any vineyard you're likely to visit. For lovers of Shiraz in particular.