I have had my Sweet 16 for about a year and I still love it! I only want to quilt my own quilts, and it is so easy to use. I played with some long arms, but the space and cost led me to decide on a sit down. I have use all kinds of threads from a metallic to king tut to water soluble (for basting) and the machine loves them all. It isn't too hard to learn how to adjust either the top or bobbin tension. You just have to give yourself time to ge your FMQ rhythm down.
Pam