When making a large qilt, I only use double--but I also do lots of small decorative quilts. Just bound some 3" Christmas ornaments. I cut 1.25" strips for a single fold binding. I press the .25" hem in the strip before I sew it on. Once binding is sewn on,the hem is nice and crisp and then I sew the edge down either by hand or machine--depending on how quick I need it (I love to blindstitch hems--very soothing for me.)
The narrower, single binding is less bulky and more in proportion to my itty bitties.