I like #7 and #6 best. Of those #7 is my pick. I like the font and colouring of 'Jamie Cunningham'. Is it possible to create a 'JC' style icon to go on top instead of the swish?
My favourite is still #16. Iike the gradients you've introduced but feel it makes the logo loose some of its punch. I do like the very subtle drop shadown on #66. How would #16 looks with that added?