Welcome Elaine!
I grew up in Bonners Ferry Idaho, so Spokane was the place to go to shop!
Wunderunder is nice and does not seem to get that stiff feeling. I just made over 30 placemats and the backing has wunderunder in between the fabric and muslin lining. I ran out and before I could get more I substituted steam a seam. There is a definite difference in the two. Also Wunderunder can be bought by the yard which I found helpful.