Looking at upgrading to a new MC cartridge any thoughts?

The Art 9 could be a too high compliant cartridge for a mid-mass Rega arm.Less than 8Hz resonance whereas the preferred Dynavector looks a good match at almost 11Hz tonearm/cartridge resonance.

effischer The phono preamp Is a all tube triode class A preamp and have a SUT with it that bounces the gain up to 73db. I think I should be good for xx2. My only question is how is the bass on the 17d3 compared to the 20x2L? I just like the price point of the 17D3 over the XX2.

@jakecanada 

my first moving coil cartridge to see what all the hype is on MC.

So what's the hype, Jake? 
Which MM did you tried before? 

I have tried the ortofon  2m bronze and 2m black.

@jakecanada i think the whole universe of beautiful vintage MM cartridges is missing if you only tried those two modern ortofons. I'm going to the oppisite direction from very expensive modern MCs to less expensive vintage MMs. Those cartridges like Audio-Technca AT-ML170 OCC and AT-ML180 OCC or OFC might be rare and hard to find, but they are much better than the most expensive MCs up to $4500 i have tried in my system. In my opinion it's better to try 10 rare vintage MM cartridges, than one super expensive MC you may not like afterall. Even extremely rare vintage MMs from the 80s are cheaper than new MC in this crazy world. So i don't understand the hype about MCs.