Sorry... Just to clarify, I currently own an iPad and an Android phone (HTC Droid Incredible 2). Looking to perhaps upgrade to an HTC One soon but at the very least will definitely stay with Android on that front.

This is very valid. I have the same question... I own an iPad, and the extra functionality that the hf3 offer over the hf2 would be worth it, even if only for the tablet-based experience. But for newer Android products: how friendly is the hf3 series in terms of just making calls? I would at...