Originally Posted by Scrappy Gram

They are the same machine. The Sweet Sixteen operates by foot pedal in a stationary table. The HQ16 operates on a carriage on the frame. You can take the one from the table and put it on a frame at a future date, or vice versa. Some people buy the HQ16 on the frame and find out they have back or leg issues that prevent them from quilting standing up. They then take the machine off the frame, add the foot pedal and it becomes the Sweet Sixteen in the table.

I have the HQ16 and love it. The company is fantastic on quality of product and service. Good luck!