I would get the revo intake if i were you. From what i have seen that is the best. I have a VWR at the mo but will be getting the revo at some point.
Id understand that choice if you had neither, but why the swap? Thats a very expensive way of gaining or potentially losing a couple Hp!! Lets be fair those VWR ones are essentially ITG intakes with different letters on them and are capable of supplying enough airflow for stage 3 and stage 3+ setups!!
As for AMD, I dont trust their dyno or their sales jargon.
He tried telling me his stage 2+ cars will easily pull 300Hp, he also told me if i wanted to gain 10hp he could sell me a cat aback exhaust....I said no to both lol