Yosharian
Arcane
Try a 4K monitor, as others said, also try a 144Hz monitor, once you get used to 100+Hz fluidity you won't ever go back to 60, let alone sub-60. Also Ultrawide can be fun.
Yosharian, I agree that the fluidity is better with a 144Hz monitor, simply because our eyes can still register changes above 60Hz.
But, be careful not to fall victim to anyone claiming an even higher monitor Hz will do wonders for you in the future.
It's just a marketing gimmick because human eyes have their own limits!
Also, there's the weird Soap Opera Effect
Oh I know what kind of range is best. Anything above 120Hz is pretty much pointless unless you are a fighter pilot or an esports 1%-er. The 240Hz monitors (or higher! jesus) are a joke. But 100+Hz is really worthwhile once you learn to appreciate the difference.
As for 4K, 2160p is nice but I'd rather have fluid graphics than 45FPS 4K. I know where my graphics horsepower is going. 1440p is a nice middle-ground, though.