Entry #1. Classically what we expected and like for this logo. Especially like the softness of the font and the coll hardness of the one chain link. A contender. Thank you.
Entry #5 I get the peg for the "I". Like the clean design.
Entry #4: We had not considered the magnifying glass earlier, but we have seen it at least twice now and it is growing on us. This version is maybe too Sherlock Holmes in detail, but we like the concept. Thank you.