Yes, the next model up is the Horizon, and it's a beauty of a machine. One of the differences between the Horizon and the 6600 is that the 6600 has a built in walking foot, and the Horizon doesn't, if that's important to you. Of course it has a walking foot; you just have to put it on. For me, that wouldn't even be an issue, but we all have our priorities. The Horizon has the widest "throat" to accommodate the most quilt, more stitches, and is build like a rock. It has all of the features of the 6600, plus a lot more. It's a machine I'd love to have, if I had the money. Please, go down and sew on one. I did -- spent a good half hour sewing away on one, and she's a smooth, steady, solid beauty of a machine. That's the one my friend ended up paying $2,300 for, with rebates and good old fashioned American negotiating. Oh, and it comes with an extended warranty. Still needs it's yearly check up to stay in top running order, just like a car needs its oil change, etc., but that just makes sense, especially if you are a heavy user. She's a love of a machine, and you need to take good care of her, the way she takes good care of you.
Warmest Regards,