To be honest I never heard of it until Jazzcnc mentioned it in a comment. The controller (UC300ETH) appealed to me. Ethernet, 6 axis, high stepper pulse frequency, analog outputs and a load of I/O makes it pretty flexible for what I have in mind over the next few months. It's only Approx. 60 euro for a licence ( only works with their controllers ) That said you can hook up the controllers to Mach3/4 also. The BOB is very good spec also.

http://cncdrive.com/UC300ETH.html

http://cncdrive.com/UCBB.html

Both currently sitting in the cardboard box!!!!

One thing I need to invest in is patience......... Currently like a kid at christmas waiting for santa to arrive.