I was introduced to it last summer during a Shop Hop .... I bought some, merely to "buy" something as the shop owner had been so good to me in showing me around her shop and stock, and yet I didn't want/need anything. So I thought, I always need thread, so why not give this a try?? ... even though to me, I didn't see it could be any better than what I was using.
All I can say, is try it and be observant re the comments already made above. Exactly why I fell in love with it very quickly ... and now have a hard time returning to my old threads to use them up. Aurifil is my sewing thread of choice now.
(as for the shop ... I've since returned and have signed up for the Kaffe Fassett workshop when he is in the area in October and during the Shop Hop this summer, she'll see one massive sale of fabrics to get ready for that workshop)