It all depends on what you like. Personally I like muslin and would use it anytime, any place. However, you will read on here that there are people that would drive 500 miles to use anything but muslin. It's your quilt, so only you can decide what you want to use. If the quality is good, and you like it - what else matters? 98% of the people that you make quilts for wouldn't know muslin from the man in the moon. Just my humble opinion.