McCormack DNA225 w/Platinum Upgrade???

Where does the McCormack DNA225 with the Platinum upgrade stand compared to other top 2 channel power amps? The upgrade nearly doubles the initial price of the amp so it would need to be compared to other amps in the $5000-6000 range (new, current prices). I've read several positive reviews of both the standard amp and the upgraded model. Considering that many parts are changed out would it be a better idea to mod a used unit rather than buy new? Plus the modded unit gets another warranty right? All input welcome.
Search the reviews, another member recently posted his findings after the upgrade...its a good review.
Yes, I read it. Excellent review.