Got the email from Tristan today about new Aurifil grab bags so of course I checked it out. Saw they have all these assortments of 28 wt. thread. Anyone ever use this weight? How did you like it? Any info on this and the heavier weight thread would be appreciated. I've been using Bottom Line in my bobbin (and sometimes on top) and Aurifil 50wt on top for both piecing and quilting, but I like the thought of heavier weight thread for quilting. Thoughts?