I just get a motherboard, memory, hard drive and power supply and fit them into my control panel, that way it makes for a very compact and neat setup, few of my machines use Via Pico motherboards (70mm x 100mm) and the rest have mini ITX motherboards (170mm x 170mm).
I use touch screens on all my machines and dont have a problem other than having to wipe them down with a cloth every now and then so I can see them
Some are more accurate than others. I have a capacitive one by 3M on the Chiron and its very accurate but my Beaver Mill and Computurn lathe have generic Chinese resistive overlay panels and they are not so accurate but still work well. The wee lathe and the coil winder have capacitive as well but they are actually NCR point of sale computers, they work well also.
Only problem I have had with touch screens is I once had an ELO screen , both monitor and panel were excellent quality but the touch panel was SAW technology and if coolant landed on it the cursor would follow the coolant, I changed that out for one of the Chinese overlays.
I have had my touch screens on some machines for probably 10years, maybe more and no problems.
One thing however is I much prefer to have external buttons for most things and the controllers with loads of I/O nowadays makes that possible. I tend just to use my touch screen for things like tapping the MDI so I can enter values or tapping DROs etc etc and I use buttons on my panel for day to day functions (start/stop/hold/reference etc etc).
Hood