I've got the G6 since 3 weeks now and generally i agree with Andrew's review. But there is not only light, there is also shadow.
1) I've noticed a dramatic difference between the 25/24p (30/24p) mode and the 50p mode. The 50p mode is less sharp and detailed. Absolutely visible.
25p (Natural) 100%
Comparing the full screen shots side by side one can see that the 50p image seems to be stretched somehow. This might be the reason for negative reviews of some magazines here in Germany. I guess they made their tests in 50p (Can't tell you 60p mode has got the same problem).