Port my current M1 single plane or install the RPM Air Gap?

Wow....started to read this post hoping to get some insight and it all went downhill quick.
The OP was asking about M1 single plane intake vs RPM dual plane and we went all over the place.

Im in the same situation. The newly built 408 I have I went with the RPM AG. Motor made a little over 500/500.
I'm getting ready to put some spray on it and I feel like a open plenum would be a better choice on the juice.

I have a M1 single plane that I am thinking about swapping to. I'm running Trickflow heads and both intakes have been port matched but not much else.

Which way would you all go? Leave the AG or go with the SP M1?