What makes a better ad for your app?

Do you advertise your app? Have you integrated cross promotion of your app with AdDuplex?
How did you come up with the copy you use in your ad? Have you tried testing different versions of your ads to see which is more effective?

This is just what I've been doing with a number of developers recently. We've run two versions of an ad for one of each of their apps to see which is more effective and what we can learn from that.

I'll post the full results of the experiments soon but for now lets try a little test. Consider these two options.

Option 1

Option 2

Which option would you choose?
Which option do you think more people would click on?

Let me know what you think, in the comments or on twitter, and I'll tell you which did better soon.