I am switching to mach4 and use gers 2010 screenset. I have issues with mach3 that if you attempt to use the avid corner finding macro I get weird behavior and sometimes have random movement right after using it and then using the dual probe setup. I love the way that the 2010 probing works but would also like the fast corner finding with the avid corner probe. Using the probe routines in mach3 is a pain and slow.
I would love for that macro setup to exist in mach4 as well. I wrote to avid about this 2+ years ago because of how useful it is. It is amazing when using a rotary axis because the original touch position is gone or in another location if the material is still there when I change tools. It would be almost impossible to get to the right location and height again during a 10 hour carve on a rotary.