Yes, the knowledge that I made a good choice is perhaps as satisfying as any factor. What makes it more so, is that I ended up with 3's for the price of 2's because of dealer incompetence.

As Alan mentioned, I have yet to compare the AX and Millenia lines directly. A dealer friend has promised to drop of a set of M60/80 for me to listen to, but it has not happened - I must call him and remind him!
I would guess that the new speakers would have a bit of an edge, due to newer technology and testing Ian has undertaken in the many years since I bought them.

In terms of comparing them to other current speakers, well, I have several comparisons that I have made. Axiom has been consistent in their performance, and while they are above some manufacturers, they are below others. I have speakers above and below them on the performance scale.

Overall, they are a good value in their price point, and slightly above.