Well, the thing with procooling is that it's filled with engineers. I definitely agree that they like to do things one way because that is the engineering way. There must be data/graphs to support claims. Testing must be done a certain way because only in this way will one get the most objective results. As far as pushing for doing things one way and only one way, I tend to find that they justify their reasons very well scientifically. They're just not all that great at putting their objections softly, especially "unregistered" (aka BillA, "Beware, He's Grumpy")
Overclockers, on the other hand, has some truly excellent, technical articles, but sometimes I get the feeling that there are a lot of immature "OMG STFU n00b"-like teens there without the technical, engineering backgrounds that the procooling people have.
But either way, there's good advice and good people in both forums.
I agree that the reserator thing is not that great. Besides being external, big, expensive, and tall, it basically automatically makes your computer non-portable, meaning no more LANs unless you want to swap in a HSF each time you take it to LAN, and then you won't be able to impress friends with your overclock