I gave my opinion as a generalization of just buying the best you can with what you have. I don't have any working experience of the difference between the manifolds.. again there's a lot of people on here who have tried all the different manifolds and if you started a thread with that in mind specifically you might get more specific answers...
Me.... When I got the car and I wanted to go bananas I bought a dual quad tunnel around. I only cried once and funny enough it cost $100 more new now... I put it on my relatively mild 318 LOL... but I knew where I was headed so eventually it ended up on my 410 Stroker... I only cried once...
