Hi I'm looking for a good attennuator that can tame my 100W Marshall non master volume guitar head. My shortlist is based on what is on the market in my country. 1. Fryette Powerstation 2. 2. UA OX 3. Riviera Rockcrusher. I only want the best within reactive versions. If the OX has the best attennuator, I buy it even without needing the other functions that comes with it.