I have a Rectifier oversized 4 x 12 cab that I putting up for sale. It's about 6 - 8 years old. I seem to remember a tech once telling me it was a good one because the V30s in it were somehow different to newer versions. Maybe it was because of where they were made or something, I can't quite remember. Are older cabs more sought after because of the speakers in them for some reason?