After listening them both back to back yeasterday I'm leaning to Polaris over DK-3001. DK-3001 sound great and are indeed linear then Polaris but the actual amount of details retrieved seems to be the same. At least when using them both with 3,5 out of mine Opus #3. Also it seems that using 3001 will end with pain after an hour session. Another option is buying Periodic Be which are really impressive iem with non-detachable cable being the only real flaw. And I'vealready found a service that can help me fix this issue
Back to Polaris though. After so many people saying male vocals is the weak spot of Polaris I've spent some extra time yesterday listening to my opera discs and some favourite male singers. And there was actually nothing wrong with them with the exception of Nick Cave sounding thin and a bit dull. Which is a shame but not a tragedy. Bowie sounded as Bowie, Whetton sounded as Whetton. Oh and Mercury was also being himself. All that of course is true only for my ears and with my source. But I actually believe that with good product it comes down to what actuall pairings can provide and not to the sound of an earphone or a dap in a vacuum.