My vote is get the Onyx Black.
I guess i'm getting a blue radius friday. Or a black I can't decide and no I can't get both.
If you have any atomizers that are anything but silver, black is the way to go. I had a brief stint with the Cabernet Red, but it just didn't seem to go well with my black or gold atomizers. With the silver top and bottom on the Radius, it just seemed like too many different colors going on for me. The black seems to go better with black atomizers and isn't bad with any other color (I have black, gold, and white attys in my collection).
Just my