Take a look at the PSI Barracuda Chucks. I have the B2 and just love it. Only complaint I have is I don't have 2, I get tired of changing back and fourth from my chuck jaws to my flat jaws. One day I'll buy a second one.
I agree with Steve, take a look at the Barracuda 2 chuck, great deal! I love mine, and impressed several folks during the Virginia IAP picnic with how well it held and how true it ran.
Edited to add check for it on amazon.com, sometimes they have it cheaper, and possibly with free shipping.