I like the font and look of #13 better than 10, but love the green 2. Being that this is a hydrogen product (hence H2) I would like to see it show something more towards longevity, activity, etc. Could you please provide more design ideas and change up the colors while using gradients? I would love to see you try some of these with black backgrounds and maybe use some lime green in there too.
Thank you for your efforts.