The main issue I see with the AW heads, at this point in time is........ What if you damaged one bad enough to need another one?

For someone who already owns a set, that's a moot point. You just run em and hope for the best.
But if a few sets of "NOS" showed up in the market, I'd have to think about how deep I'd want my build to be based on something where a replacement wasn't available.

In that regard I put them in the same catagory as the Chapman Stage 6's...... Except for the price of course.