[gamble]

GoPro 2 was rock-solid, but 3 and 4 had huge quality problems. Terrible customer service as well. I used to like GoPro, but since the GoPro 2 they've completely soured me. I don't know if the GoPro 5 is any better, but the Amazon reviews are terrible.

[bduerst]

The wifi on gopro 3 is spotty at best. I wouldn't put GoPRo in the "quality" camera department, since it's essentially just another CMOS sensor with accessories.

[2muchcoffeeman]

I've used a Hero 4 and bought the Hero 5. The 5 is better IMO.

The 5 also turned out to be a little cheaper for my use case than the 4.