Can't go wrong with either one! Let me know how the G1 works for you. I've been considering a G4 for a while.
I got the guitar w/ 11s... It was very responsive w/ good clarity, but a bit thin... changed it awhile ago w/ 12s and the tone improved... its good for fingerstyle, jazz, light strumming... its not very loud, but the trebles sing... I would prefer a G2 sana, for more aggressive style
The G4 must really be nice... I dont think he still use braz for that model though... and the wait time is 2-3 yrs... I feel that Greenfields sound similar to Bashkins... you'll save a lot on Bashkins, almost 50% I think... And w/ that price range, consider Olson, Wingert, Claxton, etc...