2 SNES controllers to USB

[vestcoat]

Anyone tried these? 
http://cgi.ebay.com/Dual-SNES-Nintendo-SFC-Gamepad-Controller-USB-PC-/260746520510?pt=PCA_Joysticks_Game_Controllers&hash=item3cb5b427be

I'm looking for the cheapest, 2-player, USB solution that'll let me use turbo controllers.  Smartjoys are becoming scarce and they only convert one controller.  I've heard good things about the Tomee controllers, but they don't have turbo switches and I don't want two more controllers in my overflowing drawer.

[roflmao]

Wow, that's a pretty slick little device. 

I picked up one of these a couple of years back to keep with my netbook and it works relatively well (it folds in the middle so sometimes that's a little awkward).
http://www.amazon.com/gp/product/B000OE07AA

Unfortunately, it looks like it's been discontinued.  A quick ebay search didn't come up with anything either.  I think it even includes vibration feedback, but I don't have any games that take advantage of that.  I use it for my snes and tg16 emulators and it's not bad. (not as good as the original controllers, but it does have a turbo button)

[hoobs88]

I bought some of these for use on the Wii but they have some USB adapters as well.
http://www.retrousb.com/index.php?cPath=22