I have the UC300 eth from them and find it very good. It was easy to set up for me as a novice in CNC.

I had a PC disaster immediately after getting my second hand machine, lost all software and settings. That is when I decided to go with an ethernet motion controller. Uccnc works on a low spec pc very well for me.
Those new contollers with built in BOB look like a neat solution, seems like a bargain with free software licence. Similar idea to this one https://www.cncroom.com/interface-ca...igo249ia6r2v25
but much cheaper.
Just looked at the PDF http://www.cncdrive.com/downloads/AXBB_E_manual.pdf and it looks like the same setup as the uc300.

Good luck

Ollie