I did pay for all of these because they work flawlessly, Robert offers free versions as well so you can try them out.
Super Nintendo: Snes9x EX+
For the 360 pad, the triggers don't work and the back/start buttons are tied to the emulator menu and can't change them. Developer is currently working on the triggers as of last weekend when I emailed him about them being buggy.[update 7-27-2014] Still no update or email from developer. Issue still present.
1.9.20 was sent to me by the developer to test the triggers for the X360 gamepad and have confirmed they work. Start button is tied to emulator menu. Not that big an issue since you can just set start button to an analog click. Everything seems to be in working order.