Cameralabs P7700 review
This guy gave it a 18 out of 20 for image quality while the G15 got 16 out of 20. While the guy at DC resource says the G15 has better image quality.
Both reviews also state that the P7700 overexposes, I'm glad I bought the P7100 recently.
As for IQ Canon is always an option, but the awkward handling of the rear dial has to be fixed first.