Here's a few other guidelines, refined based on the logos we've seen so far. The entire company name "BI Source" should appear all on the same line -- no splitting up the line between "BI" and "Source". Also, the word "Source" should appear with the first letter capitalized.
Also, regarding the slogan "Make Better Decisions." In all logo versions, that should appear in mixed-case, with the first letter of each word capitalized. I think it looks better below the "BI Source", rather than above it.
The icon of the cube with the maze on it... that is closer to what we're looking for in an icon mark. Still not exactly it, but closer than the first example.
Thanks again for the logo ideas!