Can You REALLY Taste The Difference Between Cheap Versus Expensive Wine?

My personal favorite brand of wine is Franzia and I prefer it served on the rocks. Straight from the spigot on the bag works fine too, but sometimes I feel like being a classy lady and that requires me to at least pour it into a red solo cup. Why go for the expensive stuff when the cheapies get you just as drunk? They don’t taste any different…or do they?