I just used bamboo batting for the first time. I loved it! The bamboo batting was so soft and had no lumps at all. I hand quilted the quilt it was in, and it was so easy to push the needle through.
The back of the quilt is white with purple polka-dots so I will give my SIL a heads up as to the rust spots. (It was a baby quilt for Future Niece and I have already given it to her.)
I am really disappointed because I was all set to switch to it even though it's pricey.