We like the simplicity of #21 and the play off of one of the letters. #16 allows versatility of placement (stacked or side by side) but it feels a little two abstract for some reason. You are very talented. Would be interested in seeing other imagery as well, not just sun. Ideas? We focus on developing people and organizations using emotional intelligence. The sun represents "shedding light" but there may be other images as well including use of a silhouette?