My quilt teacher told us about this. She uses it for everything on her machine. Even says good for hand applique.
I just cheked shipping to Canada and its only 5.79 for 4 lbs!
Its called invisifil and can e seen at
http://www.softexpressions.com
Gale

Thanks, I've been looking for 100 weight colored thread that wasn't silk.

Soft Expressions has the thread sets on sale but no single spools. The thread sets are super nice. I found the single large cones of this thread at Red Rock Threads. Both have low shipping.