Sorry, I know nothing about this. This topic made me think of this
[video=youtube;2o1U2pWcR34]http://www.youtube.com/watch?v=2o1U2pWcR34[/video]
It depends. There are ways for the manufacturer to misrepresent the number of threads, or at least count them differently to get a higher count. As with most things, it's more about overall quality than any specific rating.
But, with that said, yes higher quality sheets do really make a difference.
I only opened this thread so I could post this link. Rep to you sir.
That's where I got my 600 sheets. They're greatThe trade off is between feel and durability. Generally speaking, the higher the thread count the softer they feel but will wear out faster. Also, as others said beware of advertised thread counts (when in doubt just feel them). Find out if you have a Tuesday Morning store close by, best place to get nicer sheets at a discount.