drewfield, the walking foot is essential, IMHO! I use the walking foot often, not only for quilts, but quilted garments as well...anytime I make a "sandwich". I wish the walking foot wasn't as costly as it is, especially considering the price of the machines!
It would be nice if sewing machine manufacturers would include a walking foot as a standard feature. My hubby was very pleased with a little Janome he bought me a few years ago for Christmas, and I was amazed that it came standard with a walking foot! Of course, at that time, I didn't even know what a walking foot was, just that it was a funny looking contraption!