I know the specs and I read all there is to read about them as well as watching videos shot with all 3, but who has first hand experience using the GoPro and one of the Intovas, specifically for diving? How do they compare?
All have their pros and cons...
Intova Sport HD2
Pros: price (just over 100 quid new), had LCD, longer battery life, supposedly better colours, made for diving, more control buttons, standard attachments.
Cons: narrower lens than the other two (160º)
Pros: all of the above, plus slightly wider lens (170º), price (£170), WiFi
Cons: still not quite as wide as the GoPro (10º still seem to make a difference)
GoPro Hero 3+ Black
Pros: superwide lens, supposedly good in low light, good audio (FWIW in the water), WiFi
Cons: price (though they can be found for around £200 used), proprietary accessory attachments, loads of scrolling through menus, only 2 buttons, no LCD included, colours not quite as good as the Intova, lame battery life.
Price being an important factor I'm leaning towards one of the Intovas - either the HD2 for a lot of bang for buck or the Edge for all the bells and whistles for a bit more money, but I do really like the width of the lens of the GoPro...