I love quilting with silk thread but it's too pricey for most of my quilts which are utility quilts. Glide thread is getting rave reviews from LA quilters. I received a free sample spool of it and I like it better then silk! It comes in great colors and is made in the US!
http://www.bobbincentral.com/SearchResults.asp?Cat=216
To buy at member's price all you have to do is register. It's free.
5000m spool is $5.95 -$6.95