Well I am a very traditional quilter I think. I like more traditional fabrics. Many have called them old fashioned looking but that's just my style. I like a full piece back or if it's not wide enough, pieced from one fabric. Small prints that compliment the front. I do a LOT of white on white backings. Might be because all of the quilts I grew up with had solid white muslin backs. It's just what I'm used to and what brings me comfort. Of course all the quilts I make are functional; made to be used over and over. I think the backing is just like the front and batting - it's all a matter of personal preference/taste.