Auto Modifier Select is a simple tool that remembers the last modifier or base object you had selected on an object or selection of objects and re-selects it when the object is picked. Ths can speed the work flow of going from one object to another when modeling, rigging or other procedures that forces you to move down in the stack each time a new object is selected.
Download: Stack Tools.zip
Place the Stack Tools.ms script into your 3DS Max Plugins folder and restart Max. Macros will automatically be created and can be found in the PEN Tools category. Just add them to your favorite hot key, quad menu or menu.