Microtex is just the Schmetz designation for sharp.
Mike, universal needles were invented to be an in-between for sharps and ball points. Not quite ball pointed but not quite sharp either. In my opinion that makes them universally good for nothing. You'll see an improvement in your sewing by using a true sharp needle(designated microtex, sharp, topstitch, etc.) for wovens and ball point needles for knits.
Cari