I love Nature-Fil bamboo/cotton batting. I do not prewash because I do prefer the antique look. The Generous Queen size (100"x116") is a great size for the quilts I make and also for the people for whom I quilt. I stock up when there is a 50% off sale (plus I use my VIP discount card for extra savings). I have not tried Fusi-Boo yet, but probably will in the near future.