Originally Posted by Shelbie
I like the look of larger stitches, so I always use 4.5 or even 5. I find that this stitch is small enough to hold all layers securely and if you have to rip, it is not impossible to remove. I also find that the Janome walking foot tends to automatically use smaller stitches over thicker areas. Perhaps if I had the thread regulator option, this wouldn't be an issue. Experiment and see what works for you. No one is coming to measure your stitches and complain!
Just remember that larger stitches are easier to get caught on things and snag and break thats why they are easier to remove. I personally prefer 12 to 15 stitches to the inch with a looser tension and less presser foot pressure and a walking foot, but you really do have to do the test strips first because it depends on the fabric, the batting, and YOUR machine.