If the flow increase is inside the usable lift range... you'll make more power.
Only in a situation where the port is much bigger than it needs to be for the given flow number will you see flat spots or tq losses etc.
If it's only flowing more at peak lift you're gonna see less in returns, minimal hp increases
Who are you discussing this with and what over exactly.
The flow increase is in the same lift range. The less lift, the less of a difference. .300 lift= 2cfm diff., .400=11cfm, .500=14cfm, .600= 32cfm.
Not really discussing it with anyone in particular. Trying to decide on whether to use the heads I have ( Indy 360-1 ), or Trick Flow that I have an opportunity to purchase.
The pros of the Trick Flows is the ability to use any stock port intake setup.
The Indy heads require using a single plane Indy intake or modify the intakes I have.
Less headache with the Trick Flow if I want to change intakes.