Essential ChiropracticLogo Design Contest

Hello,
Here are my first options...
#16 #17 #18 #19
Please don't hesitate to leave a comments and advices.
Regards!

I like the writing in 17 and 18. Could we try essential in some lower case letters.

I do not like the seashell or spine pictures with these logos. Could it be something more abstract like dots that make up a circle, or a mirror image of some lines? "Wherever the mind and heart are at the body will follow"

Royal Blue and light blue with gray possibly

here are the updates #23 #24 #25

and here #26

Can you put the picture on #24 on the side like #26. And Can we try a different color than the dark navy blue? I would like it lighter, like a royal blue.

done #27 #28

here is new one #49