I bought a lot of Connecting Threads Essential line and dumped it. Hated the stuff. Just looking at it, it lacked lustre, was flat. Using it was a nightmare. I had some breakage (and only 1 ply would break - not all of them!), and SO MUCH LINT!! I traded it all here on QB to someone who loved their thread, and yes, there are lots of folks here who love that thread so you might too. Me and my Janome (I didn't try it on my Husky) hated it.
I then tried Aurifil and liked it so much that I quickly returned to the site and bought not only more thread but the color card so I would know what colors to buy in the future.
I will also use: Gutterman, Mettler 60wt in the bobbin (LOVE that stuff!), Superior Threads King Tut, and a few others are OK to use.
The best price I found for Aurifil is at
http://www.sewezdesigns.com/Aurifil1.html. Have ordered from them multiple times and happy with their service.