In thinking about all of this on the 440QE.. vs my 430.. I have been more involved with my 630 as if it's an extenstion of my right arm. I have not seemed to have formed that attachment with the 430, and I had not explored that much on the 440 QE. I think what ever you have, if it feels right to you and you can handle all that has to offer, then it's the right machine for you. Sometimes it's better to buy the very best that you can, regardless of the make, because if you connect with it, then you don't have to worry about moving up every other year. And there are many who have formed an attachment with a machine that they have had for 25 years and they keep it serviced and in excellent working condition and are perfetly content to not move up ward.