Dr. Feickert Blackbird

OP wants two arms. WHY tell OP not needed?

Find, love, settle on a preferred MC cartridge, forget further comparisons. OK.

An MC fixed stylus cartridge is an excellent reason to have a second headshell (exchange/re-adjust height? tracking? anti-skate?), OR second arm ready to go with a MM cartridge with a replaceable stylus to

play .... LP’s that don’t have content that benefits from the difference, IOW do not wear out your expensive non-replacable stylus for no good reason.

That’s why I added my 3rd arm. 2nd arm is Mono always ready to go. I realized I was wearing out my stylus on fun but not acoustically special content. Especially playing ones I intended to give away or sell.

I'm sure the Blackbird is a fantastic table, I owned 2 Volares and then the Woodpecker - solid performers.

I had the Kuzma 12 VTA on the Woodpecker and wasn't too keen on it, mostly it never felt stable when cuing and it was a bit of a pain changing out cartridges and doing a new setup. But I'm not thrilled generally with Unipivots.

Check out Origin Live for excellent tonearms. Pick the one from their lineup that you can afford. I had the Illustrious and it's a fantastic arm. You don't see them too often on the used markets. 

Since all listeners approach playback from their own perspective and goals there are many many different ways to skin the audio cat.  To @mijostyn the focus seems to be on an vibration isolated table with a dustcover, flat clean record, mid compliance cartridge and medium weight tonearm.  I'm sure there are other goals too. Others love the sound of their vintage idler turntables and SME 3012s because at the end of the day, they like what they are hearing. 

It seems a bit silly to debate the right or wrong of the minutiae here, especially when it comes down to preference for a multi-arm system or stereo versus mono carts. Its more important to characterize what these differences sound like or do for a listeners system. For example, the ViV labs arm violates many dogmatic rules of tonearm design yet sounds great to many experienced ears when set up right and matched with an appropriate cartridge.  How does it sound differently than a linear tracker or a 14" Kuzma 4P?  

The OP is interested in a two tonearm system which will restrict the TT selection to those that can pull that off well.  The Kuzma Stabi R is one of them.  There are many others including the Fieckert, Micro Seiki, TechDas, Galibier, and CSPort.  As I said above, having multiple cart-arm combos ready to go is valued by listeners who like to change flavors based on listening moods. Its not about right or wrong.

It all gets very tricky when the experienced among us have strong experiences with change from one design to another. I'm sure @mijostyn and @elliottbnewcombjr opinions' are refined after many years of experimenting.  They have just come to different conclusions, like we all do. My closest audio buddy uses vintage Marantz tube gear (7c, 8b, 10b), a Rega P10, Nordost cable and Nola speakers.  Sounds amazing and I enjoy listening to his system.  But there is no way would I try to replicate his system in my house. Except that 10b Tuner, I love that thing so I bought one. 

We may all want to hear what is actually on the recording but at the same time we listen for different things. 

Interesting comparison with the DC vs AC motor Karl...Which leads me to a quick recommendation for the OP. Don’t snooze on the Stabi REF 2. It’s going to be a different sound than the "R", which admittedly, I’ve not heard. I have heard general comparisons, and the "R" may be a bit more neutral, which shouldn’t be taken as a negative. It’s all about the rest of your system, rack, and overall sound you’re looking for. The Ref 2 has been in production for well over 20 years, so I think it goes unnoticed. I have one with the Gimbaled Ref 313, which is simply a joy to use. Probably no going wrong here. If I could swing a Pipe Bomb for my second system, I would likely buy one. But that setup is something I’m trying to keep sanely priced.

Kuzma Stabi R is better, without question. You want 4 arms? You can have 4 arms.If you only want 1 arm, look at the Thales Compact and the simplicity arm.