Trying to decide on an SWR 1x15 cab. I currently have a Goliath III 4x10 and I want to put an SWR 1x15 under it. I really like SWR speakers and I am wondering how similar the Working Man's 1x15T SOUNDS compared to the "higher end" Son of Bertha. I know it a better speaker but I'm not really concerned about load handling. If the Son of Bertha sounds much different/better than the Working Man then dropping that much more cash will be warranted. If not, then I'll get a 1x15T. Anyone A/B'd both of these?