440 Source Head Opinions?

Hey I understand why guys would pick one or the other based on cost or performance, I was just saying that your estimate on the difference in power potential is just incorrect. Now I also realize you don’t want to spend the money so you need to justify your position. I put up what I know not based on opinion but on fact because there might be someone that takes your position as fact and not conger that it is.
I personally don’t care what head anyone uses but I am interested in how well they work…
That's fair the reason why I said I was skeptical is after porting my budget heads were right at 298 cfm @ .500
312 or something at .700
I'm just not sure if the performance increase would be as much as you are saying, however there are so many other factors at play here my compression is only 11:1 on pump gas I'm running smallish headers etc.. I don't think in obtaining the numbers you say that the heads alone can be attributed to being the sole reason for achieving that level with the 240s considering they only flow 15 or 20 cfm more than what I have