Some good info there.

I also use iZotope tonal balance but I use it at the mixing stage. I think it makes more sense to fix balance problems in the mix instead of trying to fix them while mastering.

The ability to visually see where the issue is, and then zoom in and actually hear exactly what part of the mix is causing the issue is very useful, it's one of the best tools iZotope has ever come up with IMHO.

Bob, I agree 100% about the Lurssen Mastering Console although it gets lots of negative comments from the purists. The mastered for iTunes feature alone is brilliant, some serious magic happening with that. It's not the only mastering tool I use, but it's always the last in the chain, other than a LUFS meter.