Originally Posted by Sewnoma

I just got a 6600 a couple months ago and I am seriously in love with this machine. I'm not familiar with the Horizon so I can't give you a comparison, though. My previous machines were more or less "beginner" machines so the 6600 is heads and shoulders above anything else I've owned. I think a lot of the features I'm thrilled about on this machine are probably on both machines.

I loooove the thread cut button. Best invention ever!! I love how strong the motor is - I think I could sew right through my fingers and it would barely slow down. (So far have managed to avoid testing that, though!) Accufeed is awesome, I suddenly became a much better quilter with that feature - I made sure to get extra feet so I have the SITD and the quarter-inch seam Accufeed feet and I'm a very happy quilter with those feet. I really like the separate bobbin winding motor. This machine performs all around better than my little Brother (CS6000i) when it comes to decorative stitching - no skipped stitches even at top speed and they come out neater and tighter in general. I love that I can position the needle to the left and right with such precision. I like that the feed dog drop switch is on the FRONT of the machine rather than on the back! I'm glad they put two lights on the machine instead of just one.

Overall, very happy with my 6600 and not a speck of buyer's remorse. To me it seems just as easy to use as my two little machines (I also have a 20 year old Kenmore) - easy to thread, easy to work with. So far it takes any thread and any fabric I throw at it without blinking but I've heard others say their 6600's are picky about thread.

One thing I would change about it is something I think is the same on every sewing machine - I wish I could take off the plate without having to unscrew it. I am trying to be really good about cleaning everything between projects and I'm terribly lazy and hate unscrewing the metal plate to get to the bobbin area. I wish it just latched on like the bobbin cover does, but I've never seen a machine like that so there's probabaly a reason they don't make them that way. Also wish the Accufeed feet could be snap-on like the rest of the feet but that's just laziness again on my part! Oh, and I wish it came with a hard cover instead of just a soft one....but it's so heavy I probably won't move it around much anyway so not a big deal.

This machine also came with a knee lifter, which my dealer swore I would fall in love with. I tried it for awhile but it was always in my way and I never used it so I finally took it off.