I have an Ashdown ABM 300 head that I relly like. But I need a better speaker cab. I will probably go with Ashdowns ABM410h. I want to get as much volume from this as possible but it is in 8 ohms. If I want a 4 ohm modell Ashdown will have to custombuild that for me and it will take some months and cost $100 extra. I guy I know did a test with my head and two identicall cabs from Trace Elliot (410:s) except one was 4 and the other 8 ohms. He couldnt hear any difference in volume at all and he`s good at bass-stuff. (If I go with the 8 ohm modell I will be able to add more speakers in the future and save $100.) What do you think?