The Bernina mechanic at my local dealer says the 500 and 700 series are the best Bernina has ever made. The higher the number, the higher end the machine. I got my 770QE on a great special price with 0% interest. Btw, I love my machine so much that I talked my sister into buying one, and she got an even better than me! Look around, do your homework, and you will find what works best for you. Good luck!