You are correct...the diff between both are more stitches and thread cutter on the 855. I've done my research recently thinking abt buying one...Also the 835 is now on sale for 999 versus 1200+ for the 855. It's a wonderful machine and I'd recommend all Vikings..I have the Husqvarna SE and would never buy anyother brand...They are the only manufacturer with Sensor foot that lifts automatically when you take your foot off pedal and makes it so easy to pivot without having to lift the foot manually. Go for it you won't regret it. That sensor foot is great for doing machine applique and just turning your quilt in general