Techgage reviews the Logitech Cordless Precision Sony PS3 Controller. We reviewed a short while ago the Logitech Chillstream PS3 controller.

Quote from the review:
"There's a new PS3 wireless controller out there, and it's from none other than the king of peripherals.
Their controller costs $10 less than Sony's own offering, but as we have found out, you might be better off spending that extra money."
Read the full review on Techgage.

I actually prefer the original Sony PS3 controller. I did not see a 3rd party controller that looks or works better yet. See more Sony PS3 controller accessories.