Well, personally i’m using an older Logitech gamepad (can’t remember model#) and it’s working fine so far for all games. This is a picture of it 
If you are looking to still use a SNES looking controller, I would recommend this brand. http://www.ebay.ca/itm/New-SNES-USB-Retro-Classic-Controller-Pad-to-PC-MAC-RetroLink-Super-Famicom-/290944776041?pt=US_Video_Game_Controllers&hash=item43bda8f769&_uhb=1
From what I have read online, the controllers are as close to authentic as you can get, and should last a while. The only issues of course is, you won’t have analog joysticks or the L2/L3/R2/R3 buttons.
All around, I would recommend the F310 for wired and the F710 if you wanted to go wireless. http://gaming.logitech.com/en-ca/product/f710-wireless-gamepad