I recently traded a jcm 900 head for a simulclass MK III red stripe w/ verb ,eq, ev12L . While I haven't had a lot of time to fool with it yet, I just wanted to ask the knowledge rich folks here if the III can do metal tones well or if I should seek out a mk IV? Keep in mind I'm not a big fan of the recto sound, seems to buzzy to me, IMO. I am also, should I decide to keep it, going to need a headcase to convert it to just a head (already have a recto 4x12) any suggestions on who makes a good headcase? Thanks , Eric (newbie)