I've found the opening in my straight stitch foot on my Juki is perfect for machine sewing binding. I fold of the binding (don't press) and sew to the back, and then pull to the front and line up so it's just barely covering the stitching line. I line up the foot so the binding fold rides just along the inside of the opening in the foot, and it sews down with a nice even stitch. I've also been told I sew a smaller stitch, but I use what I use for just about everything so don't know about that.
Since I don't press, I don't get where the fabric wants to pull and crease or tuck, it just rolls to where it needs to be.
I am doing a project at work that will end up with about 120 6" blocks that are individually bound, so I'm getting a lot of practice with binding and corners.