If the G1 sounds better to you great! You can save money!
I play for a living too (technically, as do several others here on the board), and everyone I've shown (all my customers, coworkers, and even my wife) all agree G2 sounds much more *real*.
But as Safran just pointed out, a lot has to do with the speaker/eq/compresser/mixer setup. When I ran the G1 (its own unique sample, definitely improved over the T5 piano) and the G2 (same sample as CVP909/CLP785 but with no VRM) into the CVP909 speakers, the difference became much more obvious. Through the GNSMS01? very little difference in the CFX, but quite a noticeable difference with the U3 and the Character Grand.
I'm just saying what works for you works for you, not necessarily everyone else (and likewise, what works for me works for me, definitely won't work for everyone) but Safran is correct; your speaker/eq/mixer setup has a lot to do with it
We have 1 customer, who has been trying keyboards for 25 years now, and he always says (oh, when i try it at my restaurant, it just doesn't sound as good as my old Roland JV80 (from 1982) and he's probably correct.
I told him to bring his aging keyboard in, and through the GNSMS01 (I daisy chain everything into the same speaker set) and he was shocked at *how* much better a Genos or PA5x sounded over his Roland. I explained to him; it all depends on what you have everything optimized for.
Mark