At least, none with artificially-inflated thread counts:
In a quality product, the incremental comfort value of increasing thread count over 300 is very little. A 300 thread count can feel far superior to a 1000 thread count. Thread count has become a simple metric used by marketing people to capture interest and impress with high numbers. The problem with mass produced high thread count sheets is that to keep the price down, important elements of quality must be sacrificed, meaning in the end the customer gets a product with an impressive thread count but that probably feels no better (or even worse) than something with a lower thread count.
How does this happen?
- Weaving with 2 ply yarns that do not have a high enough yarn size so the end product feels heavy and blanket-like.
- Inserting multiple yarn threads into the weft. These are usually visible to the naked eye. We’ve heard of as many as 8. This practice reduces the quality of the fabric; it seems less tightly woven despite its higher thread count.
Now if somebody would just do something about contrast ratios on LCD TVs.