Hi Sam,
My personal preference is the top one, I prefer its lighter feel. The bottom one is exposed a little too dark for my taste, and is a little crooked, though obviously that's a minor point easily corrected.
Although I prefer the top one, it could perhaps benefit from a little cropping, there's an awful lot of plain sky there - but then again maybe that's the effect you were after!
Be careful not to burn your retinas out doing too many "into the sun" shots looking through the lens! (They won't repair themselves.)
Cheers,
Shaun