I like the way you fit my company motto in there in all of them. I also like how #6 does something different with the graphic than I am used to seeing for Fitness Logo's. I like that it catches my eye and how you have played on the company name and motto with the person climbing the stairs. I'm not sold on the 'stylized person' approach, though. Then again, I'm not against it. It's just that it seems ubiquitous in the Fitness industry.