I will be going to Gord Bush when I build my block (who knows when that will be).
He has plenty of great reviews from the Subaru guys and plenty of great reviews from the honda kids.
I was reading about a subaru that one of the lobes on his cams flattened and he busted a few valves and gord stood by his work and took the whole block apart to make sure the bottom end was good.
I know rainbow is good but from what I hear they can be a little disorganized.