Embroidery thread

Have you heard of using Sulky 12 wt. thread to do embroidery?  I had not.  My friends saw it at a quilt show being demonstrated. She bought some and said it is wonderful. So I of course had to order some blue because I love to do "blue work".   I have not gotten around to trying mine out yet.  Have you tried Sulky? Whats your opinion?  Here  is their site if you would like to check it out.                                                       http://www.sulky.com/thread/thread_cotton.php