Golfeline

I have a used 2023 Millie that I just purchased from APQS. It is still in the boxes and waiting for the set up to be done by a qualified person. I was surprised to see an "L" style bobbin in the machine. Not only was I surprised but disappointed! My Baby Lock Accomplish takes this bobbin for bag making! I don't mind changing the bobbin for that task. I was told that the "L" style bobbin has a better stitch quality and better tension. That "L: bobbin is only 2/3rd of capacity then the "M". Is it worth getting the conversion done? By worth it, I mean will I have any problems due to the conversion and will it in fact affect the stitch quality and tension? As users, I am hoping you can answer these questions.