RGB filter question

Hi all -

I wonder if any of you have found an advantage to a particular filter set over another for RGB imaging with a monochrome camera?

Thanks for sharing your thoughts on this.

Alan

A couple of things I am wondering - if the sets advertised as parfocal (ie the Astrodon RGB) perform so in a planetary application, and does the efficiency of one set over another translate to a noticeable change in the gain/shutter setting needed?

Alan