I have a HQ16. Perfect for my situation - I didn't have enough room to setup a permanent frame for a "big boy" machine like the Gammill or APQS. I bought the expandable table for the HQ16 and I am able to set it up in my dining room and then take it down when I'm finished or needing my dining room back (although that is not a quick task, it's do-able with help lifting the stuff).
I liked it enough to go ahead and purchase the Pro-Stitcher computerized upgrade for it. Now, I'm quilting with computerized - what amazing things I can do now! Suddenly I'm a good quilter instead of a beginner!
My machine has worked beautifully for me - no problems.. And it solved my space problem with it's portability.