While Rhône is known for multi-layered wines, complexity isn’t a prerequisite for greatness. Take E. Guigal Hermitage Ex Voto Blanc. The white wine features 90 marsanne and 10 roussanne. That’s it. Investors pay more than $200 per bottle for this marsanne blend that wine critic Robert Parker gave 100-point ratings to in 2009 and 2010. (Fun Fact: E. Guigal also produces a red version of Ex Voto, which Parker has given three perfect scores.)