I have a Mesa Traditional 4x12 with English Mesa-branded Vintage 30s. It sounds great but I'm a little bored of the sound of V30s. My friend has a Matchless 2x12 with a V30 and a G12M25 and it sounds absolutely fantastic. I'm thinking of buying a pair of G12M25s and throwing them in the Mesa in an X-pattern, but I'm not sure how it will sound with the dimensions of the Mesa cab. I know that the V30s will be a bit louder than the Greenbacks but I don't really care which speaker type is the dominant one as long as the overall tone is good. Has anyone ever tried this combination in a Mesa 4x12?