Save only downside, there can be no macros (command sequences, "Activities")
Only the green button can more simultaneously turns on two devices and the correct source selected (did not work with me, because the time interval between TV One and source selection was too small and can not be adjusted) - but other functions can not be in this key set.
Nice is also the possibility of specific key assigned to a unit in each mode (in satellite mode TV volume control)
Conclusion: very useful and convenient for 3 or fewer units