Bamamama, I own a Tin Lizzie and I have used Connecting Thread on her....it is a bit linty, but works fine for me...If you are going from using poly to cotton you may have adjust your bobbin...I just put a practice piece on last night to set the tensions cause last time I quilted I was using varigated poly so I knew I would have to adjust my tension and I wanted to practice some free hand. I have used connecting thread from the start and never had any problems..I see they now sell Polyester thread and might try theirs. Just remember Lizzie will take any kind of brand well so far she works for me. I usually order from Tristan here in Canada also great prices.