I believe that as you go up the scale in price, wine improves, but in diminishing amounts. For example, the difference in quality between a $25 cabernet sauvignon and a $20 cabernet sauvignon is much less than between a $20 cabernet sauvignon and a $15 one. My question is at what price point is there a huge leap in quality? I'm confining my question to cabs because, I suspect, the price point is different for different wines. Thanks!