To describe computers. Specifically the kinds of words you would find in computer advertisements like "Powerful" and "Professional" and "Performance" or even "Productivity" (I am fricken drowning in P words here!)
The catch is, they need to be single words and start with a B ... I could make R or T words work in a pinch though as long as there is more than one of them.
So far I have "Bold" (which is a stretch but I can make it work).