I have http://www.thomasleeltd.com/sheets.cfm these sheets and they're amazing! The thread count is 500; they're very soft but also somewhat crisp. I haven't had any issues with threads unraveling or the wash messing them up at all. I can't say enough about them.
Satin, don't ask me why.. BF is sensitive and prefers them to regular.
I love a good stiff white cotton sheet (hotel style) but I'm getting used to the satin, it's a compromise however I'd like to get a lighter color like in the pic, they're hard to find though. Right now I got a set of red and black from the linens n things going out of business sale.
Right now DH & I have a ralph lauren matching bedset on our bed & the thread count is 400, i think. Love it. I've had supposedly high thread count sheets feel thin or pill on me, but the RL just feels quality & gets softer with each wash.
There was an article a few years ago--was it on the Washington Post web site or maybe a decorating blog?--in which the writer bought a whole bunch of high-end sheets and actually counted the threads. She found that the advertised thread counts were often not anywhere near the sheets' actual thread counts. Think the article was called something like "The Lie of Sheet Thread Counts."
Before getting engaged i had always admired these sateen, Egyptian Brushed cotton sheets. They were only sold in Myer stores in Aus as far as i know. Cost a FORTUNE even when they were on sale at %70 off, so you can imagine how expensive. But they are the most divine, Softest, smoothest sheets ever. Nothing compares so far. I cant remember the thread count. It was back about 13 years when no-one knew what that meant. Still so amazing to sleep on.
I have totally super ultra gorgeous cotton high thread-count sheets from Australia that I bought a couple of years ago. No longer avail. Thank goodness I got extra king flat sheets just in case. (I LOVE these sheets!) Boticelli was the name of the design, fyi.
Wash your new glam sheets in cold water ALWAYS and dry on low temps ALWAYS to help them last forever.