Hi,
Steam a seam is more expensive than other bonding stuff. I like it for applique because it is removeable. It is double sided sticky tape but it is not permanent until you iron it. I have some great patterns from a talented lady that goes under the name Zebra patterns. She uses steam a seam to create beautiful floral wallhangings.
I have had problems with fusing because I don't always get the pattern tranfered right. It usually works out unless you are doing lettering. Those have to be going in the right direction.
Good luck with the project.