I have just traded my 6600 in on the new Horizon machine. Oh - Christmas is here!!! :) I had gone in with an open mind and was not willing to give up my 6600 unless the Horizon definitely out sewed it. I was taken with all the stitches however when it came to the free motion quilting that was when I told my wonderful store owner, Jane, that it was a wrap and I was now buying the Horizon. It is amazing! No ladders on the back, it just went this way and that so easily, and I was sold immeadiately. A quick trip home to get the 6600 organised and back to the shop and now my beautiful Horizon is sitting proudly in my sewing room. I am exhausted but HAPPY! This machine will do me for a long time to come. I got a great trade in and the 6600 really cost me nothing to use for the last 18 months. The 6600 is one amazing machine however the Horizon has stolen my heart.