Interesting! Split right down the middle!
To me, they are both nice styles, but they may communicate something different about you, due to stereotypes/ judgment.
I think many people might guess the darker hair has associations of serious, sincere, grown up, elegant..... dinner eating oysters in a quiet restaurant, contemplating whether the guy opposite is good enough for a goodnight kiss. ..
The lighter streaky one is more 'out on the town, more available, more fun but also less mature..... downing a shandy at the local pub, speaking a bit loud and having a great laugh with your mates, before hoping to pull. 
Maybe unfair...., but there you go..... !