One other thing to keep in mind is that, I understand, the value of your Div Miles, is probably 'worth' more on *A carriers than US. For example, if you hit a time when only 'High' rewards are avail on US, you'll be paying more Div Miles for the US C product than for another *A carrier's C (or even F) booked with and through Div Miles (if you can get a C/F product on a *A carrier - which is a relatively big 'if'). I believe there are other threads detailing this.

That said, I flew from CLT>CDG last August in the Envoy suite (used my CP UG, not miles) and had a wonderful experience.