I agree on Cabernets. For me, that is the one varietal (maybe Pinot Noir too) that I can really tell a difference between a cheap bottle and an expensive one. I'll spend more for those wines, but if I'm drinking Syrah, Pinot Grigio, Souvignon Blanc, or Petite Sirah I stay on the cheap end. Chardonnay is the other exception, but with that I'm more selective about where it's from, rather than price point - California vs. French.