Nice lettermarks, particularly #34. The wordmark and slogan are fairly plain. I am leaning towards all uppercase letters and bold (representing strength), like you have. The color choices are interesting. That is, I like them.
I like the picturemark and the negative space person. However the gear is implying manufacturing, which is a theme we want to back off from. Can you use #84 and remove all but the bottom two gear teeth? That is if we number the gear teeth, from left to right, 1 through 7, remove gear teeth 2 through 6. Then play around with that and provide a few options?