Dear Mbump: Yes, the XV1s is a very good performer way better not only that your Sumiko one but IMHO better that all the ones named here.
Even though and other that the tonearm subject ( btw, VPI designer use the XV1 as his " prefere " cartridge with his tonearms. Could be important to ask him about. ) the XV1s ask for first rate Phonolinepreamp that you don't own yet.
In the other side from that Sumiko to the Dyna is a big big jump that maybe could put your system more in trouble than on improved perfromance.
If I was you I will take another alternative that not only outperform that Sumiko but that match your priorities and your system: Clearaudio Virtuoso Wood, you can be really surprised how good this humble MM performs.
Regards and enjoy the music,
R.
Even though and other that the tonearm subject ( btw, VPI designer use the XV1 as his " prefere " cartridge with his tonearms. Could be important to ask him about. ) the XV1s ask for first rate Phonolinepreamp that you don't own yet.
In the other side from that Sumiko to the Dyna is a big big jump that maybe could put your system more in trouble than on improved perfromance.
If I was you I will take another alternative that not only outperform that Sumiko but that match your priorities and your system: Clearaudio Virtuoso Wood, you can be really surprised how good this humble MM performs.
Regards and enjoy the music,
R.