I have a Jenome 3500 and am about to buy a 6600, it has been interesting reading all of your takes on the machines and bobbins. I have never had a problem with my 3500 with bobbins and have had it 6 years and love it. I am excited to get my new one and will ask my dealer if she has ever had a problem reported to her about the bobbins. Love this site for opinions. Keep them coming.