I heard a very informative presentation last night at my guild concerning needles and thread. Sue Rasmussen was the lecturer and she makes beautiful quilts. But her discussion on threads made me think way beyond the sale bin at Joanns. I will be paying more attention. One of her award winning quilts - Grizzly, she said she probably used many different types of thread including monofiliment, silk, cotton and rayon. Not sure if she used any wool thread on that one. It was an hour well spent.
You can see the quilt on her website.
http://suerasmussenquilts.com/