I'm going to have to visit a shop after Christmas and spend some time playing with both the Horizon and the 6600. The key question for me is whether I can do FMQ on them without the tension going awry, and if they'll cope with a range of threads for FMQ, as those have been the big problem with my Janome. (and no, it's not just operator error -2 very experienced quilters have tried and failed too, and the machine has been in and out of the shop for years).