Hey Robert,
Here are a couple more ideas, using my top-ranked design: #30 & #31
The nice thing about these is you essentially have two logo options in one. You can use just the puzzle piece "S" as an alternate icon, for whenever the entire logo is not applicable (letterheads, branding on pieces, hats, etc. all come to mind!).
Let me know what you think of these new ones.
Thanks!