i've had my ampeg half stack setup for almost 20 years now, and my ss-150 solid state head is finally starting to wear down. I have a 4x12 ampeg cabinet with celestions, and the crunch i got from that head was exactly what i wanted... i've read way too many musicians friend reviews, etc, too many conflicting stories... can anyone suggest a lower priced head that is ideal for crunchy metal/death metal sound? thanks!!