I think these builder vs. threads are getting about as old as pipe and dyno threads...to be honest.
You're not getting any information other than popularity contest winners.
That's not a knock on HJR, Wildcard, Redline or any of the others. All do great work, reputable, etc.
Out of all the people recommending one or the other, ask them how many motors they've had build by ALL of them.
Not many, if any...can say all. Several even stated they haven't dealt with so and so....
Personally, I've had HJR do my old motor and it ripped. I can't tell you if it would've ran better, worse or indifferent in the others hands.