actually what i need is guitar advice,and how it relates to my mark 4.my band wants to do a bunch of songs that have a pretty low tuning like some chevelle and three days grace.my guitars wont comfortably hold this tuning for more than one song(esp and hamer).does anybody have any advice on this.i have never played a seven string,and what exactly is a baritone guitar?do these guiatrs relate well with my mark 4?thanks for any advice on the detuning world.i would also like to stick to purchasing something under $500.