There was discussion started comparing the S-4 and the GR-2 over in this thread :
Other competitive options could be considered over there too. I think more apples to apples to the GR-2 would be with the Oddment ODD-1 ( thread ).
There was discussion started comparing the S-4 and the GR-2 over in this thread :
Other competitive options could be considered over there too. I think more apples to apples to the GR-2 would be with the Oddment ODD-1 ( thread ).