[66gtk]

You asked for consensus and you will not get that here (:

I've bought and sold a few ERAs and my cars have had all the engines that have been discussed here. However, no two cars can be "all else being equal". That scenario doesn't exist, even with factory built ERAs - especially on the used market if that is what you are considering.

The swing in premium between a well built 390 and well built 427 S/O can be $10-20K++ depending on the details of the engine build and who built it. There are tons of factors to consider.