My machine does not like Coats or Floriani. I am currently in LOVE with Connecting Threads Essentials for piecing. It's a 50/3 thread, so I use an 80/12 topstitch machine needle. They recently had a sale where a 1,200 yard spool was only $1.95, so I stocked up. But even the regular price of $2.79 is still quite a bargain!