I have a 6600 and love it. I understand they're being phased out since the Horizon came out, perhaps you can get a deal? Re the throat space, I don't often make anything larger than a large lap quilt so the throat is fine. The only upgrade I'd make in the harp size is like Harriet said - if it were the couple of feet an LA gives you. Regarding using a DSM on a frame, I have considered it and tried them out at shows but you get down to around 4" of quilting space past halfway and I feel that would restrict my quilting design. So I'm waiting on the LA. LOL :mrgreen: :lol: