Regarding XPR bridging... remember, my XPR was a five channel amp, so no bridging involved as far as I know.
Also remember that my beef with Emotiva was with their customer service, and especially their choice not to repair my XPR-5. I actually loved that amp and thought it was an excellent piece of gear, at a really attractive price point (I think it was $2K when new)!
Personally, I just hate buying stuff that is considered disposable, but maybe they have changed that policy since my experience with them...