I love these dicussions about thread. I always learn something new.
I started quilting a couple of years ago and I decided that I wanted to use cotton thead for my piecing and machine quilting and I buy most of my cotton thread from Connecting Threads because the price can't be beat. Lots of folks on the board think it's very linty. I keep my nylon cleaning brush handy and keep my eyes open for fluffs of lint in the bobbin area when I'm working with that thread.
I love that someone noted the difference in thread made for a serger.