PC controller that is supported by emulators

So my birthday is coming soon and i wanted to buy a controller for the pc that will make it able to play most console games on different emulators.play games in gameboy advance/nds ps1 ps2 well in every working emulator.first i checked about dolphin because its the one that supports wii but it redirected to wii remotes.and i wasnt sure if wii remotes are compatible with other emulators.so anyone atm using any controller on pc that is compatible with the majority of emulators? i am mostly a retro style fan so emulators like snes too. anyway if someone knows feel free to suggest me and i will search on ebay x) cheers

just grab a typical usb controller that looks like a ps2 controller, will work fine and probably only 20 bucks.

best advice - get a usb based controller (a generic or a 360 controller) and get a key binding program like xpadder and bind the keyboard keys to the controller buttons - its easy to do once you know how to