I think they all have their view on why the way they do it is best, and they all seem to make sense put a particular way. Personally I've always sought hand ported heads, originally from recommendation, engine builder, racer, or contact of. The subject is a hornets nest of scientific calculation and rife in opinion. I've seen the 'hi flow' heads he writes about with port inconsistencies because the casting is different and patches are missed, maybe that's where a taping option means something to some people.
The point I was trying to make (if there was one at all) is that an all singing and dancing BVH isnt the best choice for everyone. Even though it may be tempting to pony up for one because obviously biggerer is betterer