I use the wavy stitch. Almost all my batting is W&M so I do make sure the scrim sides are on the same side.
Edited to add:
I quilt on a long arm so mostly I just butt the two pieces up together and stitch out my panto. I like curvy, swirly pantos and most of my patterns, never go more than 1 to 2 inches without a seam running across it. Everything is stabilized very well. I can never tell where I joined the two pieces together even after many washes.
Last edited by Barb in Louisiana; 03-19-2018 at 04:31 PM.