I want to be careful with the Utopia comparison. I was only able to listen to Darin's Utopias for about 10-15 minutes, so all I have is high level impressions vs the PMx2s. He was kind enough to let us keep him PMx2s for several days, so we were really able to put them through their paces (vs Focal Elears and HD 800's primarily...that group of three quickly rose to the top of our lists)
I would want a lot more time with the Utopias before saying anything authoritative vs the PMx2s, but they were both clearly the top of the heap amongst the 12 cans we were evaluating. To our ear, having the PMx2 hand tuned by Alex just took them to the next level. Obviously, folks like Focal and Sennheiser can't devote that type of expertise and time to hand tune every pair that comes off their manufacturing lines. But what Alex was able to do vs the stock Oppo PM-1 was astonishing (to say the least). Respect.
@darinf has both. Darin, can you speak to the PMx2 vs Utopia comparison?