HI Chaz,
All these controllers are stand alone, no PC, no Mach3. It seems they accept standard G code, so no special post processors. That must be proven though by practice.
lets resume:
-there is this controller 
smc4-4-16a16b .  Here is the manual I looked at  it but it seemed too slow for my machine.  It seems most people use  this one as it came earlier.
Attachment 19111
-DDSCV1.1,  3 and 4 axis.  
I bought this one before 2 days. Mistakenly bought the 3 axis version / if sb wants that one ,  PM me, i will give it 20$ cheaper to you/ . Anyways, it seems on paper and from what i have seen a better choice than the previous one. When it comes at home, i will know more. I have read 
 the MANUAl  from page one to end very carefully and apart from some small questions all looks well.
And yes, i will connect my 2 long axis  to one of the controller axis or just one of them and control the other from the servo itself . Will see about that.
Here is the most extensive info in English i found till now 
Attachment 19113
- 450-700euro range
you could find them at aliexpress using "offline cnc control" or " panel cnc" . John pointed them to me, he is playing with some 2 axis one for lathe, so he should know better 
#4 . I found this site 
http://www.cncmakers.com/cnc/control...roller_System/  where you could better see all their reincarnations.
Now the problem here lies to find who makes them / as all sell them like they make them but that's not the case/ , the manuals and eventual support. The link above has somewhere the manuals so next step for me would be to read the manuals themselves and buy one controller.
Attachment 19112