The local Joanne fabric store has the Sapphire on sale. I have been reading a lot of negative comments about it. I like the idea of a wider area to sew quilted fabrics which is why I am looking at the machine. I have sewn on the Emerald for years and loved them. (Retired Home Ec. Teacher). Would you recommend the top Emerald model or the Sapphire? I will be sewing on quilted fabrics and 2 layers of quilted fabrics on many projects.