Remora - ethernet NVEM / EC300 / EC500 cnc board

Wow .... after folowing @scotta 's instructions I was able to unleash the full potential of the EC500. 

I'm using CL57 closed loop stepper drivers and I was able to step so fast , with the motor on the desk, that I got a following error from the motor driver itself before I got it from LinuxCNC. I have the driver setted up for 1600 steps per revolution. 

I just wanted to give some positive feedback . This is awsome.

Hello guys, it's good to see that this project is growing in all directions, I congratulate Scott once again for his work.
Well, to the mess, today I started looking at some Steppers Motors on AliExpress and Ebay, to my surprise I can't find closed loop motors with single-ended encoder, I only see differential encoders, we don't have differential inputs in the EC500 or the EC300, I have done tests in the past using only signal A and B in differential encoders (discarding A/ B/), but it depends a lot on the hw design made on the encoder pcb and the differential IC used since the output stage is usually not referenced to Earth, having said this from my point of view the best thing would be to use a differential->single-ended converter which I have seen on AliExpress or simply use single-ended encoders, if anyone can add ideas in this regard they are welcome

Does not matter, you can use differential encoders with single ended inputs, just do not connect the negated outputs, so use A and B, do not use -A and -B.
Same for index.

Do you guys have any recommended DC or AC servos to replace Nema 24/25? Same frame size?

Frame size you might have some searching to do, they have 60mm frame size but Im not sure the nema equivalent.
Im fairly sure AC servos will be better, as the motors will probably be 200v. I dont remember if the ac servos get converted back to DC anyway.

When it came to sourcing the motors between AC and DC, my main deciding factor became supply voltage. I found it hard to source the servo drive with my voltage requirements for AC servos, as most I came across were 220v, where DC servo drives I could use 48v DC. My machine is a 110v machine, so it was the deciding factor. If you do not have these limitations, probably go with AC

I noticed that there are two different firmwares in two different locations on GitHub for the NVEM, one in Remora-NVEM/Firmware and the other one in Remora-NVEM/Remora-NVEM-STM32/Firmware.
Which one is the correct one to use for NVEM with STM32F207?

Edit: While browsing around Scott's GitHub I also noticed a repository called Remora-RT1052-cpp. Is this what I should use? If so, from where should I download the remora-nv component? I cant find it in that repo.

Edit 2: Never mind, I saw that the Remora-RT1052-cpp is for boards with RT1052 micro controllers. My initial question is still valid though