The HQ Sweet Sixteen is by far the best quilting item I have bought. I purchased the extensions for the table and the overlay but not the stitch regulator. What someone said is true. It is a strange gizmo to me although others love it. Can always buy one later.
I bought mine from an HQ dealer about 40 miles away. Paid $5100 including shipping and tax.
Hq has named their sit down machine the Sweet Sixteen (Babylock has the same thing called a Tiara). HQ calls their stand up long arm the 16. ( no Sweet involved!).