I like conservative, but eye-catching, I know that doesn't help a whole lot. It has to be something that isn't bland though, who wants to work with an IT consulting company that has a logo like a law firm? So far we really have liked the submissions. The bottom one from ThePresence has been a favorite, and I really have liked the idea's Quasmo has come up with as well, but they need to be implemented a bit better. I really liked the way your submission grabs attention, it's simple yet has some flair, it reminds me of black and white pictures, they are simple, yet many times they are exactly what you need to show viewers exactly what you are trying to say.
None of them are run-away winners yet, but I truly have been excited about the submissions, I think they are going the right way. I'm impressed.