Looking for Turbo Controller for Xbox 360

I have found that every know and then, things can get done a lot faster in a game with a turbo controller. So I am looking to pick one up to use in these special circumstances and don't really intend to use it as my primary controller. In other words I am looking for a good cheap 360 turbo controller that will last infrequent use.
I appreciate all the advice. Thanks

I guess not many here are interested in turbo controllers.

http://www.amazon.com/Xbox-360-Pad-...TF8&qid=1358370390&sr=8-1&keywords=hori+turbo This is the best rated Turbo Controller. Hori makes decent pads, and 360 controllers are always going to command a price premium.

Thanks for the suggestion. I did check out that pad on Amazon before. I found it alarming how many people said it broke after a couple of months of use.

But so do so many other third party controllers.