My local quilt store discontinued Mettler silk finish thread so I can't buy it locally. The King Tut seems to be as strong as Mettler but feels a bit thinner. They seem to sew about the same. In my opinion, the 2 ply threads are not strong enough for piecing; they break fairly easy when I pull on them, except, I did like the YLI 2 ply threads for piecing but they discontinued that thread too. They only carry Aurifil in neutral colors and Superior Masterpiece in cream.
Judy