The review that you linked has an interesting comment about how the nature of the sound from the Venus is different than that from the Pontus. The review describes the sound from the Venus as being more analytical while the sound from the Pontus is fuller.
I'm thrilled with the sound that I'm getting from the Pontus. I recently listened to a dcs Bartok and my impressions are that I actually like the sound of the Pontus better for the acoustic music that I typically listen to. It has an organic feeling that I'm concerned that I might lose from going to the Venus. Of course, this is just speculation on my part, but my main thought is that the Pontus is really an overachiever if you listen to a lot of acoustic instruments, voices, jazz and small ensemble classical music even rock. The one type of music that is less of a strength is perhaps orchestral music and opera since the perspective that Pontus provides of music seems more intimate than large-scale.