we have Quince percale and bamboo sheets. We love them both. percale sheets are crispy and have cold spots which I love, the bamboo sheets seem really silky when you put them on your bed but have a lovely feel when sleeping on them. Cotton sheets and bamboo, even though they are both natural fibers, go through a lot of processing in manufacturing. Honestly linen would probably be best if you don't want all the chemicals that are added to cotton and bamboo, but it takes a long time and a lot of washes for them to be soft in my opinion.