In addition to the Azteeg X5 GT,

In addition to the Azteeg X5 GT, looks like Roy also has the sd6128 drivers back in stock. These drivers are super smooth and quiet.

http://www.panucatt.com/product_p/sd6128.htm

He also has a few more drivers coming out soon (look under the Driver’s and Bigfoot Driver’s drop-downs under the X5 GT page to see what’s coming.