So are we to assume that an LCD screen on an arranger/workstation is less prone to having issues? Considering Touch Screens are made to withstand the rigors of daily use I don't think that's the case. Do you seriously think companies would use touch screens in ATM's, Information kiosks in malls, and Airports if they were that prone to failure? Not a chance!

A broken button can often take as much time to replace as a broken screen dependent upon the keyboard its used in. It's not the parts cost that will kill you its the labor.