If you get to know winemakers, there are a lot of games that go on to doctor grapes. The chemistry and know-how are commendable. You also start to realize there are wine makers who are making wines they like, but that may not hold mass-market appeal. I had a private tasting with a guy who spent years in Napa and now does custom white-label work. I thought his stuff was absolute garbage - not at all to my tastes - but he's in demand because he knows how to do all the magic to pull out certain attributes that some wine drinkers may enjoy.
And that's the real key - drink what you like, at a price point you feel comfortable spending, and it's totally ok if you bought it because it had a cute label. The company you keep matters just as much as the quality of what's in the bottle.