Nicksgem10s,
It doesn't seem like ZYX and Mehran need any more recommendations, but I'll offer mine anyway!
The first-hand reports from Dyna 20XH and 20XL owners are interesting. I don't remember seeing those particular Dyna's compared to a ZYX before.
My comparison around your price point would be a Shelter 901 vs. ZYX Airy 2, both of which I've owned. The ZYX outplayed the Shelter in every musical category except raw energy, where the 901's somewhat crude dynamics give it a an edge - literally. If I were a metalhead I might prefer the 901. For natural or acoustic music of any genre the Airy 2 is overwhelmingly better.
Of course the Airy 2 is more expensive than the 901 ($1,950 vs. $1,500), but its superiority was so great I'd expect the $1,500 ZYX (R100 Fuji from Mehran) to outplay a 901 also.
If you go with a ZYX you'll want to increase effective mass on your SpaceArm a bit for optimum dynamics and bass. A 5 gram headshell weight would be about right. ZYX offers an optional weight for the Airy 2 and above that suits most tonearms, but it's not available on their lower priced cartridges. Aftermarket and DIY weights are easy enough to find, so this really shouldn't be an issue.
Good luck in your search and enjoy whatever you choose,
Doug