I like #46 for being playful, and friendly is one the main things I want to communicate with the logo so using the o's for eyes and a smile underneath is not a bad idea. Can you come up with some other ways to do this?
Great comeback! I believe you are on the right track with the wave, but there's a Norwegian company called Wimp (www.wimp.no) that also uses this, so it must be different than theirs. #154 is maybe a bit too similar.