The Celestion G12M Creamback or the Alnico Cream 12". Using a Germino Club 40 ( Marshall jmp50 style amp ). 2x12 partially open back cab. Would be replacing a Scumback H75.. keeping the M75. Im thinking that the Cream may have more low end but sweeter highs possibly. My goal is to best compliment the M75. Want a smooth top end and tight but resonant low end with organic mids that will take dirt pedals well. I thought about running two M75's but I like the idea of two different speakers complimenting each other. Dont know if the only difference between the creamback and the cream is the magnet or not. Thanks!