Logo critique please

I decided to get re-aquainted with Illustrator and redesign our logo at the same time please let me know which one you like (if any) a why would be cool too but not necessary. The colors are up in the air right now and may change but the concepts will stay the same.

#1 colored and basic

#2 kinda the same as #1 just added some depth

#3 plain jane

Thanks for any critiques.