I've never sewn on a 400 series machine, but have loved the 930, the 1031, the 530-1, 150QE, and the new 820. Honestly, you really can't go wrong with a Bernina, and if you do a lot of sewing, they are worth the extra money. I wouldn't hesitate to try and find a used one on Craigslist, as long as you do a check before purchasing. Good luck.