I have a Pfaff 2056 and I love it. The needle up or down has 3 heights (low, med, high). The throat is plenty big I have free motioned one king size and a couple queen size quilts no problem. The walking foot is built in but can be disengaged. I do a fair amount of blanket like top stitching on applique`, does a great job.
My daughter has a Memory Craft 6600 by Janome, she likes it a lot. I'm not sure what a moveable walking foot is though.