Just got my silver.
If you are going to upgrade, I suggest going black. The silver is basically the Hero2 outdoor (11 megapixel camera) with built in wifi.
The wifi is pretty cool. Works well. I read a lot of the bad reviews and it appears to me it's a lot of folks who just don't know how to follow directions, as you have to upgrade your firmware when you unbox it.
You can get the Hero2 and a wifi backpack if you want the wifi.
Only the black model is a significant upgrade from the Hero2. I didn't get it because of the cost, but it comes with an included remote device that pretty much makes it worth it.
If your Hero2 doesh't shoot 11 mpxl stills or 1080 at at least 30 frames a minute, upgrade
The Hero3 black shoots 1080 @ 120 frames a minute, has a 12 mpxl camera for stills and according to reviews has much better clarity and definition. The Hero3 white would be a waste
This post was edited on 2/13 at 5:39 pm