Bottom line is 60 wt. I use 60wt Presencia for piecing and I use it in both the top and bottom. All my friends who use the Superior brand also use it in the top and bottom.
The whole idea of using a thin thread for piecing is to minimize the bulk when you press the seam. Since you press some seams one way and some the other it makes sense to use the same thread in the top & bottom.
Last edited by PaperPrincess; 02-08-2015 at 01:05 PM.