http://www.redrockthreads.com/ has Aurifil and YLI.
You might want to try Glide thread (my favorite for my midarm); I haven't tried their metallics:
http://www.bobbincentral.com/s.nl/sc.1/category.4374/.f
I haven't shopped at the following, but they seem to carry YLI metallic:
http://www.artfire.com/ext/shop/stud...orld/0/0/56756
Last edited by Prism99; 07-12-2013 at 04:21 PM.