I've always been pretty knowledgeable of the food world, with one exception: wine. I was in a wine store today talking to the clerk, and although he was helpful I found him to be stretching in some of my questions. One of the main questions I had for him was, at what price point do you find the rate of diminishing returns with wine? I understand a $500 wine will likely be much better than a $25 one. But is a $75 one much better than a $25 one? Putting country origin, styles, grapes, and such out of play, what are some fairly readily available wines do you suggest? Up to this point, i've been a drink what I like guy but I would like to spread my wings. Snobs are welcome!