Sorry to the OP for continuing to hijack the Thread, but Rpsgc, give us your opinion once you've played the 30th edition - it's always nice to hear what other people think.
Going back to the Led Zep remasters, what are the differences in sound between the original CDs and the various remasters - is it just a live sound vs a hifi sound ? Are both valid, i.e. you may prefer one for some aspects and the other for others?