They've been quick sneaky with they're marketing as the only go pro 3 which is better is the black. The white is a rebranded gopro1 and the silver is the old gopro 2.
There is a huge difference between the 2 and 3 black as the frame rate is higher, the higher the frame rate the smoother ( less pixely) the picture. All go pros have a bad picture in dark/darker lighting conditions.
I chose the Sony action cam after plenty of research. Is has a steady shot which reduces the shaking effect, the go pro doesn't come with this.
The colours are a lot nicer, the blue and greens really show through great.
The parts and accessories are far cheaper, amazon do a pack of 2 recharchable batteries for about $15 and they take various different memory cards.
You can also get an 3" LCD screen attachment so it'll act like a handy cam.
And they are cheaper, you can get the non wifi model for £115 over here which is about $175 and they're prob cheaper the USA
You can check out video comparisons on YouTube