I've been looking for a new head for awhile and have found two i really like one is the Orange Bass Terror and the other is a GK MB Fusion 500. I was wondering what people had to say about these compared to each other. I have palyed the orange and love it. I havent gotten the chance to play the GK, but i love the small size. They are both 500 watts and have simple controls, but how do they compare?