So, lately I've been thinking about building a gaming computer, and I'm going to be using a budget of around 1500$USD, I currently have a monitor that is 1080p, and has a 60hz refresh rate. A lot of people are saying that I should buy a 120hz instead, and I want to know what the difference REALLY is. If I'm investing that much in a computer should I spend the extra money to get the better monitor?