I'm buying an Ibanez GRX40Z and a Marshall MG15CD(R?) amplifier. Now my brother's coming from the states in december, so i wanted to get an effects pedal from there. I have two pedals in mind, both of boss, so can you people take a look at 'em and tell me which one is better, thanks in advance, here are the URL's https://www.music123.com/Boss-MT2-Metal-Zone-i21788.music?match=1 https://www.music123.com/Boss-MD2-i10794.music?match=1