I was convinced to buy linen sheets by a friend because the cheaper sheets didn't last and weren't overly comfortable. I bought these because the specs said that you could commercially wash them, which usually means washing in hot. That's what I needed. I was a little surprised when the instructions said to wash them in cold, but I forged ahead. They washed up beautifully and are comfy after the first couple of washes. They were a little rough the first two washes, but I didn't dry them in the dryer. Now, they're just getting softer and softer with each wash. 
My only complaint is that the fitted sheet comes off sometimes. I do have a thick mattress but not thicker than what they are supposed to cover. The edges go under the mattress but perhaps the elastic isn't enough. Not something that would stop me from buy another set.
My friend gave me good advice!