I have 2 different setups in my Les Pauls. One has an Emerald in the bridge and an alnico IV Mule in the neck, the other is an alnico V Riff-Raff in the bridge and an alnico IV Stormy Monday in the neck. I love the sound of the alnico V & IV together (very Peter Greenish).
Really though if you order a calibrated set from Bare Knuckle, then you will get the balance between the pickups.