I'll go with the iPhone just for ease of use and simplicity. Also, I've used an android phone, seemed a bit laggy to me compared to an iPhone.
My office uses iPhone and I own a Galaxy S3 and I've got to say I would never own an iPhone for personal use. I can't stand using the thing. I find the responsiveness to the touch screen to worse than the Galaxy. I'm also a big fan of the Android OS.