For over ear, I recommend Peltors.
I have a pair I use when RCO for the Cadets and they are brilliant.
Turn up the sensitivity and they are like hearing aids, you hear better with than without.
Also used them for TIBUA and been in a room with an SBS and trigger happy cadets firing 5.56 blank with no ill effects.
Only problem I have is on indoor ranges they amplify the fans too much.