I’m partial to at least partial bamboo in the fiber. (That’s rayon or viscos to the unaware) it’s cooling, soft and wears well as long as it’s not washed in hot water. That said, I just went to look up the ones I’ve been buying at Macy’s (Charter Club Sleep Soft) and they’re no longer available.
Damn. They were affordable (on sale) and excellent. Good thing I have two sets on hand. :) I’ve had Malouf bamboo sheets. They’re expensive, but get softer as they wear and last a long time. I also buy their pillows.
I go to Bare Home for mattress covers. I haven’t tried their sheets, but they have a good return policy. Probably worth it. Otherwise, Macy’s has all their Charter Club bedding on sale and I do trust the brand. Have fun!