SBC 350 heads

Im looking to make more power out of a small block 350 bored .30 over - considering changing the heads. right now i have Edelbrock Aluminum performer rpm heads and i was curious if there is anything better out there?

Dart Iron eagle were recommended to me by a race engine builder, but the biggest trick to power is to have everthing matched to each other ie:cam, intake, carb ,heads, torque, converter, gears ,tire size. One change will affect the other.