Thank you for the replies.
I saw the AB Lifestyles sheets, and they look quality, but I'm not sure I would like a half-fitted top sheet. I mean it sounds like a nice idea but I like to stick my feet out to regulate temperature and prefer my top sheet to float.
I was looking at "Advanced Bedding" but they're almost twice as expensive for roughly the same product (300 thread count cotton). Maybe I'll contact AB Lifestyles to see if they can make a regular top sheet.