#86 is too abstract.
#44 & 45 are both very solid entries. For the more "conservative" track, they are both very solid. #45 in particular is getting very good reviews from everyone as a very solid logo.
Not sure if the final decision will be for a subtle conservative logo, or for a more adventurous and visually compelling one. But your entry #46 is the leader for the more adventurous track, and #45 is a front runner for the conservative track.