Hektoen Enteric Agar vs Brilliant Green Agar (Salmonella Detection)

[user at upj.com]

Recently, I discovered that both the United States Pharmacopia Compendia and the European Pharmacopia Compendia
are proposing the use of Hektoen Enteric Agar instead of Brilliant Green Agar for Salmonella detection. 
I cannot determine the reason for this change because both agars seem to select for Salmonella sp. just as well.
Does anyone have an explaination for this change?
thanks,

Johnny Barone 
Pharmacia & Upjohn
JMBarone at pwinet.upj.com