Like Joelv, I am not sure if my experience helps either, but I will give you what experience I have between the Dynavector and the Shelter cartridges I have owned, (and unfortunately, neither of them are the two you have asked about, but still, here goes ...)
My last cartridge was the Shelter 90X, which I believe was replaced by the Shelter 7000, (which is the model above the one you are asking about, I think). The 90X was a near great cartridge. It had great bass response, (in fact, as good as any cartridge I have ever heard). It had a slightly warm mid-range, and a very nicely extended treble response. It imaged and soundstaged very good, (but not the best I have heard, to be honest). The one real weak point of this cartridge was that it had a slightly noisy background. (i.e. it was not as deep and dark as I prefer.) Note, that I did say slightly noisy. It was above average, just not the best. Even with that being said though, I happily lived with the 90X for about two years.
And what did it take to pry the 90X off my tonearm, you ask? The Dynavector XV-1S is the answer. This cartridge has it all, IMHO. It has great bass response, (very, very deep, almost, if not as deep as the 90X). The mid-range has a nice tonality about it that is intoxicating (think Koetsu good, without the extra lushness - although I will gladly state I love Koetsu cartridges!). The treble response is very well extended, and it is even more highly refined than the 90X. The XV-1S images and soundstages incredibly well, (as good as any other cartridge I have ever heard). And, as the icing on the cake, it has the deep, dark, black backgrounds that I love. (I have quit looking for cartridges, as I have found the one I intend to keep for a very, very long time!) :-)
My two cents worth.
Good Luck in your search!