What is everybody using for i/o boards to interface a control panel full of buttons and switches to mach3. I've been using Pokeys usb for many years but I'm really getting tired of the problems. (very susceptible to noise and randomly stops working.) Recently had it open the collet mid operation with a bar feeder. Bad things happen.

The PoKeys is great.  Especially because the plugin has all the built-in functions that you can think of for a panel.  The downside is that the I/Os go pretty much directly to the pins of the microcontroller, so you really have to know what you are doing to connect all the pins and functions.  We used to make and support all kinds of I/O boards for the Pokeys boards, but stopped producing them as the demand was low.

Arturo Duncan
https//cnc4pc.com

A few things you can do to help eliminate your noise issues.

Add more earth Grounds to your machine, its common to have quite a bit of noise around your spindle motor, so grounding the case our frame may help.
Use twisted pair, shielded and foiled cables that are grounded on each side for noise reduction.
Check your Earth Ground to verify it is good, you do not want residual voltage there. If you have a bad earth ground, then it wouldn't matter what hardware you use, it would be less than desirable results.
Try a Ferrite Core Noise Suppressor, they're really cheap and the easiest to implement.