I don't think it matters as long as each block in a quilt is made the same way. I know a woman who made a few quilts with 1/2 inch seams and then trimmed them down, she hated sewing the scant 1/4 seam. Personally I try and sew my quilts with the scant 1/4" seam. My one sewing machine doesn't do well at that, so it more like a true 1/4" seam. I try to keep all my blocks at that machine and not switch.