UK / US
I love the UK one! It reminds me a lot of Across The Universe by Beth Revis but it's just so eye catching! And I love the way they have done the title. I do really like the US one too but I think I would prefer it without the girl - just the black and the title. I do like the glow around the letter O though and the way they have the title vertical rather than horizontal.
Which do you prefer?