THe NMQ2016 is the upgrade to the DC2015...it adds an automatic thread-cutter and extension table. I believe the DC2015 is now around $499 and the 2016 is prob a bit more. Both the 2015/2016 have adjustable presser foot pressure, variable needle positions, and they are a little larger machine and heavier at 18-20 lbs. I think the most significant difference apart from weight is the presser foot pressure. All else is pretty comparable in terms of features.