Logitech is no stranger to gaming input peripherals with its huge assortment of gaming keyboards and mice. It's odd, however, that Logitech puts out fifteen different gaming mice and only one gamepad. There's technically two gamepads, the F310 and the F710. The only real difference is whether you want rumble support or wireless. With only one to offer, Logitech must feel pretty confident that it's a good one.
Logitech chose the Playstation's Dual Shock layout for inspiration, but wired in support for direct input as well as X input, givin this controller broad game support for newer and older titles.
The F310 falls short of the quality of Microsoft's controller, with the exception of the D-pad, which I liked a little better than the XBOX 360 offering. The face buttons are springy and responsive, although the back triggers require a bit too much elbow grease to press in. Still, it's much better than the average fare. Assuming you don't need wireless and rumble support, the F310 is quite a value at $25, but is often on sale for $20.