I had a hard time deciding which action camera to buy and spent a good amount of time searching for the best camera for me. I stumbled upon this cool site IFTI warned you once that asked me a few personal questions and my preferences. It then recommended the best camera for my needs. Check it out.
Using my camera mainly for my hunts I am really happy with my H4B. I've used it in a lot of resolution and 4k is the way to go, not because I have 4k monitors but because I can zoom in and not loose video quality in 1080P.
I have several of both units, and I tend to reach for the Silver more often due to the extra convenience, even though I have LCD BacPacs etc for the blacks as well!
If I want to shoot in 4k, for the same reason as FoxHound above, then obviously I go for the blacks.