Old style "A" head singly four vs. new
I spent a fair amount of time on this as well asking as many people as I could find the same question. For my application, street driven 3000-6500 rpm, 580", hood clearance an issue; I was told that the older shorter version was the better choice. As is shown by the post above there is no simple, new is better answer, it is as always combination dependent which is why there are at least three different Edelbrock offerrings for SBF's let alone what, 20 for SBC's and 10 for BBC's?
We don't have the luxury of so many choices, but it's sure better now than ten years ago. The new one has much greater plenum volume and the port entry height is almost double the old version. The carb pad height is also around and 1.25" higher.
Interestingly the old style TFS A mnaifold, and the out of production Motorsport version from what I hear, is actually lower than the Edelbrok Victor 460 for conventional 429-460 heads. This helps me as I have room for a small spacer, nitorus plate and a shear plate. We'll see what is best on the dyno and then in the car.