The recommended X and Y steppers for the OX are 2.8A NEMA 23s. I'm trying to determine a cost effective set of drivers for these and I'm starting to get overwhelmed with options. At first I was hung up on whether or not I wanted to go the GRBL shield/board route or EMC2/Mach3 but I think that's moot since I can't find any GRBL compatible boards with onboard drives in the 3A range. So this seems like my list of options: 1. decide to run GRBL through something like the smoothieboard or an arduino shield and just underpower the steppers 2. option 1 but run some external drivers, ebay or gecko 3. go EMC2/Mach3 with breakout board + ebay single drivers based on TB6560 or TB6600 4. same as option 2 but with an all-in-one board w/ 4-5 axis (I've read about many problems with this route...) 5. same as option 2 but with gecko drivers What would you do? It seems like option 2 would give me full power and the most support but is also the most expensive. I've seen several build threads using option 3 but these people have a lot more experience than I do.