To get right to the point of my writing: I can't give you a definite answer. What I can definitely tell you right now is that we are to focus on the GoPro HERO4 and HERO3+'s (and I will touch base on a few HERO2 and original 3's as well), as it is the best technology and provides options for numerous consumers. With the recent announcement of the HERO4's especially, we'll tackle the main features of those to help you decide if that hefty price is worth it.
The HERO4's come with only a few mounts and do not come with Wi-Fi accessories because it's built-in! If you're looking at getting a brand new GoPro and the best of the best, the HERO4 is what you need to look at. In our opinion, the Black Edition at $500 retail is a bit steep and is geared more towards movie makers and professional studios. What we found interesting was the fact that the Silver Edition has a built-in LCD but the Black does not. Is this important to you? Also, the 4K cinema at 30fps with the Black Edition is crazy; however, it eats up a lot of battery. The Silver Edition films in perfect 1080p which is the standard for most playback devices, so going with the Silver as opposed to the Black is more recommended in our opinion.
GoPro is leading the charge toward consumer-created virtual reality (VR) environments, and their first VR-ready cameras make it happen with what they’ve dubbed “spherical capture,” which is pretty accurate, given the 360° field of view they record. VR is still a nascent technology, but it’s definitely the future. If you’re an early adopter, you’ll want to pick up a GoPro with spherical capture.