EQ Iron Ram vs Edelbrock Performer

Only repairable if you can find someone that can repair the aluminum. Usually they get scrapped because it' very hard to find someone to actually fix them. Most places will not touch an aluminum head to repair.

Cast iron has more potential to make more horsepower and last a very long time. But it' always arguable.

The compression ratio being higher is a useless argument. You have to increase the compression in aluminum to make the same power as a cast iron head. Due to thermal efficiencies.