Out of these two cartridges which would you choose?

I have both carts too. That is a hard choice indeed. I cannot sway you to one or the other.

I would, however, say if listen to more acoustic music, folk, blues, and smaller jazz groups I'd go with the Dynavector 20XH.  The Ortofon 2M Black is fantastic though.  It's really great just giving you a macro view--a comprehensive picture.  It can really rock.  The 2M's weakenss, if any at the price point, would be micro details; it does not unearth as much detail as the Dynavector--at least in my system.  All of that said, you cannot go wrong with either cart.  

Both of these cartridges did something similar for me--they opened my eyes to how vinyl can really best digital.  They made me more curious about other cartridges more than any other piece of gear has--save for me moving up to a really decent phono preamp.  

I was leaning nore to they dynavector over the 2m black because I have never had or  tried a mc before. The music I listen to is jazz to Stevie ray and 80's classic rock,and getting more into  modern rap and hiphop/pop and a lot of techno music with lots of bass. So all generes and a good solection of used records. My real concern for the 2M black. I had a dealer tell me that the shabata styleless could Wreck my records because of no propper VTA on the rp8 is that true?

If VTA is of concern you could get an adjuster ring from Origin Live for your arm.  If your VTA is close to parallel you, arguably, won't be damaging your records.  Maybe others could chime in on that issue.  I would think the VTA would have to be high or low with some significant error to cause damage.  If it's high, the stylus would be physically digging down too hard in a forward manner into the groove.  

I'm very happy with both cartridges and feel they offer a great deal of value for the money.  

Dear Jake,
Are you really asking for advice or...what?

They told you ....

1).  2m Black > 20X2 < 2m Bronze
So, no need to wondering any more : Dynavector is not any better !

2).  2m Black   equal to   2m Bronze
So, after a week with Bronze, not much of an upgrade by going to Black.

3).  2m Black   compatibility issues   with your tonearm ?

4).  2m Black   compatibility issues   with your preamp ?

       ............  and you still want one of these carts...?

Cartridge of reference quality (million light years) above these two and with the right output for your Cary, is the JVC/SAS but requires a very careful set-up by an experienced user and also, a very careful handling in use.  If you pull the trigger,  you will never compromise with this one as it stands at the very top of MM's. You will never upgrade over this one!

We were suggesting your money  better spend  for A REAL UPGRADE :
 " Incognito wiring and an Expressimo weight "  
 "Physic Harmonic Power & Speaker Cables"  

You said you are "amazed by the performance" ...
Well, .... you ain't seen nothing yet!

Best of Luck