I could only afford the Activa but it is really a nice machine with the added options. The knee lift (Free Hand System) is a dream to work with and I can't wait for the new foot control to come in so I can do needle up, needle down from the foot pedal!
It is fascinating how with a Bernina you can adjust your stitch width while the machine is sewing!
I have my Brother Project Runway machine to work with Home Dec fabrics, and to do crafty stuff that I would't normally do on my machines for quilting.