I like the font and the concept is fine. I'd like to see more curves in the icon. I'm looking for something abstract and memorable. You're off to a great start!
I love how abstract #37 is! One of my requirements was that there by no gradients in the logo. I use my logo a lot for embroidery so I need a logo that will remain consistent whether it's printed or embroidered.
Also, I stated in my brief that I dislike primary colors. I have #40 ranked at the top now because of it's uniqueness and balance. If you submit a new entry incorporating the 'I' and/or 'S', please use more muted (corporate) colors. Thanks!