I sew with Babylock Ellegante with Version 2 upgrade. I saw the Horizon at the shop while shopping one day. The separate bobbin winding feature spoiled me right away! No, I did not get a new quarter inch foot--I have a foot for that for my Babylock and my Bernina machines. Love them both!
Personally, I would rather be able to wind multiple bobbins and run my sewing at the same time! It saves bunches in time and threading constantly. Janome missed the boat when it dropped that from the Horizon. The 6600 machine has independent bobbin winding--I don't see why they did not keep that in place for the Horizon machine.