I have the HQ16 and have upgraded it to include the ProStitcher and the newer table bed and trolley. I love mine.
OK, I have a few HQ dealers here in my area. I went to another quilt quild and found another HQ owner. She has never taken her HQ in for repair. If she had a problem she just called HQ and they talked her through it. I called when we had questions on setting up the new table top and they were wonderful; sent me e-mail pictures and descriptions, and then we talked some more and got the job done.
Learn your own maintenance and HQ will help you out with the rest.
ali