Big block Valve cover suggestions?

First, I really like those trickflow covers.
I am currently using moroso golds, with a coat of paint, and homemade load spreaders.
The next motor will have the die-cast summit covers. I bought the as-cast finish that have disappeared from the catalog. The ones they have now are polished and don't come with breather holes, though mine did.
I had to move the two top holes for the holddowns on mine, and I surfacee the gasket face to make sure they are flat.
I also have some heads with only four bolts..... they always leak, though I have a new technique to try.next time.