I'm about half done with my latest quilt and I'm using Connecting Threads polyester. It looks good and I have not had one thread break....of course I almost never do with my Janome 6600. It (the thread)was very inexpensive, too.
I originally bought it to use in the bobbin because I didn't want to change it so often, but decided to try it on the top when I read that others had done the same....and I'm very happy with it. I'm used to using Auriful top and bottom and this behaves the same.