Makinson-
Both of these show promise, but I like #22 better. That's a very witty update of a shield logo. However, I think that you (as well as most of the other submissions), misunderstand what 'consulting' means in my industry. I don't just give advice, I implement it. So the piece of the logo that suggests comments actually makes us look like we do less than we do.
I hope this is clear, feel free to write back.
Regards,
Ezra