I am not sure yet as I haven't used them. My hubby uses the Feather Weight and I just got a 15-91 electric. We also bought another model 15 that was made in England and has the out side motor. We want to put it on a treadle. I have been looking for a treadle but not found the right one yet. I am interested in a 201 but seen only electric. Now you all have my curiosity perked about the 301. Maybe if I find an affordable 99 Spartan I need that one too. LOL