Wine out of a box? Yuck.
Some people still think only the French can make world-class wines. It's amazing this one is still around.
Small family wineries are better than corporate wines. Except that Clos du Bois, Simi, Hartford, and Arrowood are all owned by the big guys.
How about organic or biodynamic wines? Can they be as good as "regular" wines?
OK, so wine biases could sometimes be turned around into wine preferences such as, "I prefer French Chablis" or "I prefer the Cabs out of Napa." But it's hard to justify preferring real corks to synthetic corks as there's no data to back up natural cork as being better than synthetic.