Whatever thread you go with, before you buy a bunch of it, make sure your machine likes it. My machine got really picky after I used about four spools of Connecting Thread, so I bought Aurofil thread to try. I really like Aurofil. I went back to try Connecting Thread again and my machine did fine. Connecting Thread is $2.49 a spool, while Aurofil is $8-$9. I use Coats and Clark when I need to match a color and have had no problem.