Crazy ignition skip under load

I bought used coils from Pinwall, no more problems. You description as skip, though, really leans me toward transmission, hopefully I'm wrong
 
But the R 1 coils are supposed to be better ?? Anybody know for sure ?
I've been using Suzuki coils for a couple years and I'm very happy with the way they perform, bought a second set as spares. Also clears up a lot of room under the tank.