I just bought the GoPro Hero 3 Silver Edition like 2 weeks ago, i did this online and everything went right!! the guys from Backcountry were very good explaining everything and answering every question i made.
About the product, the camera is just great, and o picked this onw beacause i don't think i need the black edition, I will never gonna watch a video on 4K.
It has a great resolution and the audio is great, at night works pretty good and you can barely hear the wind, when you are recording a video at full speed.
I do a lot of MountainBike and works great!.
have fun with it.