I have both the Janome 6600 and the 8900 (with the accuflex foot-add on walking foot). There is NO comparison ...the AccuFeed foot on the 6600 is far better IMHO and the accuflex foot broke at about the 11 month point with medium amount of use. The dealer replaced it free but it's nowhere near as sturdy as the AccuFeed foot. If they remade the 8900 with the AccuFeed foot, I'd replace my machine.