I had the Janome 6500 for years it replaced a Pfaff that was a lemon at best. Last year I bought the Janome Horizon 7700 for a number of reasons. The only thing I liked about the Pfaff was the IDT and the 6500 did not have the accufeed. The Horizon has better lighting, which is great for my agin eyes. I also missed having a free arm -- the Horizon has that.
For many years I had the Jem Platinum 720 (it was free when I bought the 6500) -- it was light weight and went to class with me. A few months ago I bought the Janome 3160 (call me spoiled, but I missed my thread cutter) which is 12 pounds and a great machine for class.
I have a Juki on a Grace frame for big quilts, but do smaller quilts on the Horizon.