I love CT threads - I keep thinking I have all the colors and then they come out with more!
I like the polyester CT PRO, too - it's on the fine side, a little bigger than Bottom Line. Bottom Line is shiny, PRO is matte. PRO costs much less than the Bottom Line. They're both good strong threads though and I use them in the needle as well as the bobbin. I piece and quilt with it, but if I remember correctly, it's difficult for hand sewing - although it looks beautiful and melts right into the applique, it tangles
terribly!
Their regular 50wt 3-ply Essentials is great. I don't think the lint it produces is much of a problem and the colors are just delicious! I use it for everything - piecing, quilting, garment sewing.