1. b3 is Larsen or Nimzo-Larsen for what is most commonly called.
1. g3 is given lots of names but some people have been calling it the
Benko opening since Benko used it to beat people like Fischer and Tal
in the candidates tournament a long time ago. I think korchnoi called
it a Benko when he played 1.g3 against Karpov in there 1978 WCC match
that gave Korchnoi his first win in that match. As for
responses.....it is a matter of preference.

EZoto