Is it really the G1? The G2 was already replaced by the G3, so it seems unusual you'd be considering the G1 unless this is all that's available in your specific region?
The G1 was rated well, but the G2/G3 and P2 lines are rated so highly they achieve nearly perfect scores.
G1 - EVGA NEX650G (G1) 650W Review
G2 - EVGA Supernova G2 650W Review
G3 (750w) - EVGA Supernova G3 750W Review
One change from G2 to G3 was a standardized 150mm length - and that's across the range.
Good call. G1 was ok. G2 and G3 are excellent.