#21 I like the use of the A from Alerton in its font. I also like the less emphasis on the sub-titled variant of the certification (Networking or BACtalk). #22, interesting play on the square and the A with the whitespace. Not sure that it works for me though.
Thank you for the feedback. I've done another version on your preferred design - 'cleaner' looking, simple yet elegant and professional. Happy to make changes if you'd like. Thanks!