Personally I dont like HotKeys, main reason is you need to be on a screen page that has the button on it for that function to work. For example if in a wizard and you need to jog an axis and wish to use the MPG you are unable to change axis, change from Cont to Step etc unless you have previously added these buttons to the wizard screenset. With OEM triggers you dont have that problem, however the problem with oem triggers is you need lots of Inputs, so swings and roundabouts I suppose.
Hood