RO/DI Chloramine Filtering

[rerr001]

I have a 5 stage BRS chloramine RO/DI unit. It's time for new filters, was wondering if it is an advantage to use 2-chlor-plus chloramine filters inline instead of the GAC than chlor-plus filter that it came with. With 2 chlor-plus filters there would be no channeling as in the GAC. Are is this something that is no concern.