I purchased the G3 with wifi and it was ****. Camera ate up a full charge in 45 minutes at highest resolution anf then I had nothing to play the 4 x 2k video on. Video stability was better than g2.
At full res, 64gb card doesnt last long either, when I got it it was brand new so I hope they worked out some of the bugs.
Hero4 is coming soon
The wifi would not synch properly, and the extra resolution (for now) is a waste of money until a standard display can support it.
BB