Check out this web site:
http://www.JoQuilter.com
She specializes in Big Stitch quilting. Our guild had her come and do a presentation and a workshop of the big stitch. She uses #12 thread and #5 between needles. She has a large variety of colors of thread. I took a small group of friends to her shop and she is more than willing to give a demonstration on the technique. She always has an ongoing project to work on and several examples of her work. If you live in the area of Bellevue, IA, you should stop in for a visit.