"Something not quite right with the 'outrun' text but can't out what it is..."
Maybe it should be tilted like in the third pic ?
I also like the first one best, except for the inconsistencies. This obviously consists of three parts, the sky in the middle and the lower part
looks a little bit different, there's a cut-off cloud under the 'R' and the palm tree leaves on the left are chopped.
Also, if I'm not mistaken, the rightmost mountain has the top of a palm tree growing out of it.
You may not notice these things in a screen-size picture, but if you print it full size ...