I found the bobbin winder on my Janome 350E does the best bobbins of all of my machines--nothing to get "caught" and no worries about lint. One day, just as an experiment, I used up a complete cone of thread (5000 meters). It took 99 bobbins to use it up. Almost all of my bobbins were empty--I use a lot when I start embroidering.
I used the time to clean up my sewing room.