I love my Pfaff Creative Vision. Now so many are trading up from whatever they have, I'd check used machines as well. My LQS does give a 1 year warranty on their used machines as well as instruction. If you want new, then after the major quilting shows the dealers sell the demo models for a good price.
QuiltE has good points to consider.
Also, where I live there are several machine technicians available that are not affiliated with any LQS. One of the many joys of living here.