Re: #2 - I prefer #1 over #2, but mostly it's because I'm not sure if the purple object is a book and the sphere/other shape is a head/hand in #2? Is it a book?
I'm still wanting to like this design, yet still puzzle over the object/book. It's a very subtle message, yet I really like the way you brought motion into it--those lines are ephemeral.
#18 The person is too abstract for me; half circles pulled together to make a human. I like the motion lines, though, yet would prefer more balance in the fonts between "On-The-Go" and "Learning"