They all make good machines - I was just looking at the HQs - I really liked them but an can not justify it right now (I have an old Voyager17) . I would tell you to talk to customers who have needed the have their machines serviced from either shop. If you like both machines equally (imho) purchase the one from the shop whose repair man will be there when you need it the most - when you are in the middle of a king sized quilt and something has gone wrong.
Good luck - you have a very nice DH!!