440RB INDY DUEL PLANE OR RPM INTAKE HELP

Hi
Im building a 440 with the new trickflow heads and was not sure if the indy duel plane has benefits over the edelbrock rpm air gap in standard port window configuration.
Has anybody done a back to back on an engine with good cylinder heads to see the true limits of each intake. Im thinking the indy may have more plenum which will help the trickflow heads get the air they will want.
Id appreciate your input
Thanks