out of the 3 mentioned, I'd take the G-2.
tough call between the G-2 and the G-6. That 3cm makes it a little more quick kill friendly, if you have a feel for the timing needed in high deflection snapshots.
Then again, with the gondys on the G-2 you can shred the hell outta some planes. Makes it easier to cherry pick, if that's your thing. Had a G-2 in the last Friday night. Carried the gonds and ended up just Bore and Znoring some Hurri IIc's. They popped really fast with all that cannon fire.
