Like many of you I prefer bias for large quilts using the straight method only for small quilts that will not be getting hard use. If I take my time pressing and adding to the quilt, I have no trouble with stretching. Next question: Do you always join the binding pieces on the bias? It certainly makes a smother finished look. If this falls close to a corner, I will cut a small piece out and add to the other end of necessary. Sometimes I lightly pin the binding on to make sure the joints are not at the corners. I also like to use a small stripe on many of my quilts. A red and white (cream) binding adds much to small Christmas table toppers, etc. When using stripes, I like to match perfectly the stripes when sewing the pieces together. Probably doesn't make much difference, but that way no one can see where the joints are.