This seems to be supported by stats released by Valve in 2018, which show the Xbox 360, Xbox One and PS4 controllers are the best represented amongst Steam users. The most obvious answer is that the best controller is the one you already have. But there are a ton of PC-compatible controllers on the market - which are actually worth buying? If you fancy a little local co-op, plugging in a controller is a great way to do that too. In open-world games like Horizon Zero Dawn, controllers can offer a more comfortable way to play for long periods, while in racing titles a gamepad can offer fine-grained analogue controls to steer around corners.
While PC gamers generally opt for a mouse and keyboard, millions of us also pick up a controller from time to time - and for good reason.