Both of you are right -
- I had the jmw9sig and experienced poor tracking from a variety of cartridges. After countless setups (various dealers, myself w/ Mint tractor and VPI themselves) I finally learned that if after a couple of setup attempts mistracking does not go away, then there is a problem with the arm, cartridge or their relationship. In my case (and many others if you search the forums) I found out that the JMW9 is prone to mistracking, and my personal opinion is that it's to be avoided. After trying various high $$$ cartridges, I too ended up with an Audio Technica (AT33PTG) which finally minimized (but did not eliminate) the distortion.
- With that said, yes, there are better sounding cartridges that AT.
The OP does not have the JMW arm, he has the Dynavector arm which I haven't heard but looks to be a very good arm.
So - yes, he will need to make sure whatever cartridge he chooses does not have distortion, but with this arm, I doubt he will have that problem.
To the original question - sorry I can't help as I haven't heard them, but I'd say go for the XV1S if you can afford it. Otherwise, you'll just be wishing that you had!
For a bit less money, the Lyra Kleos and Delos are supposed to be really good for the price. Haven't heard those yet either, but I would like to!