Your question is very broad and subjective. When you ask about best wines, that could mean different things to many people: 1. Best taste? There is a huge difference in 95+ point rated wine to the average 90 point bottle. 2. Best varietal? you can't compare a Cabernet to Pinot Noir. 3. Best style? The American is very different from the french style. 4. Best White wines? 5. Best Red Wines?
It depends on the individual. I love cabernet sauvignon. I don't mind the specific brand.
I prefer a nice young Aussie red semi also try shiraz.
I heard wines from Chile are good. Don't know what type.
Oh and Merlot also goes down well.