I would think the width of the logs would be affected by the size of the quilt being made. If you are making a king or queen size quilt, I believe the larger logs would look just fine. For a smaller wall-hanging or twin size, the smaller logs would be more attractive. The quilt I made was a king size floral log cabin and my logs were all 2 inches, which made them 1 1/2 when sew into place. I was very happy with the results. Thought it all looked good proportionately.