I wonder why you are choosing such a fast card for the OT. ~40MB/s would be already plenty enough, but 160MB/s? Just a few audio streams won’t require that bandwidth. IMHO everything that’s faster than USB 2.0 speed (~35MB/s) is a waste of money (when used only in combination with the OT, of course).
I would suggest the “normal” Scandisk Extreme (not the Pro) which has many positive reports here on the forum.