I have never had a decent set only last 5 yrs, I only buy new ones because I'm dead sick of them.
BBB has their own line, high quality, the salesman walks the sample around the dept to compare them with others. Convince you how soft they are. Don't buy those, BF had them, they were never soft, almost scratchy and barely fit his not-very-high mattress
did you put pillows on your registry? There are some awesome pillows out there. And duvets and covers? I love bedding, does it show? If you ever see a Peacock Alley duvet cover, you have found the Holy Grail, buy it (if it's from a discounter, not full price) even if you don't have a duvet, you'll want one.