Although I have used purchased binding, I much prefer the kind I make. It is better quality with a wider choice of colors, and I find it is not as stiff as purchased binding. I stick to straight binding and have never had a problem. The main reason you would need bias binding is going around curves and scallops, but my quilts thus far have all had straight edges. One suggestion that helped me was purchasing a special binding ruler. It is 2 1/2" wide and 24" long (I think). That way I don't even have to spend time measuring, I just lay the ruler down and cut with rotary cutter. Very fast and easy. I believe I ordered it from Clotilde. I usually make my binding first thing, that way, it is ready when I need it. Hope that encourages you to try making your own again.