#19 - Very nice. The picture reminds me of some other well-known logo, but I can't remember what just yet. At this size I can't make out the slogan. The 3D type shading is kinda working on this one.
#19 - The other positive comments on this one, are that it allows that there are pther products than just waves. Most people say the picture does remind them of some other logo, like the AT&T logo. I've chevked out a few thta I thought it might remind me of, and it seems different enough not to be a problem legally. But I'd prefer that not to be people's knee jerk reaction. Still a strong contender though. This may move up in the ranks as-is.