I am strongly learning to getting this. I would buy an unlocked though, so I can sell it at any time if Android finally gets a Retina level display. That is a big sell point for me, and something Samsung has come close but not matched yet.
http://www.engadget.com/2012/09/12/i...etition-fight/
I always wondered why there are no true Retina level phones for Android. I recently read that it was because of the fragmented nature of Android that it would be major overhead to also add Retina support for a few models. That is what you are seeing a Win 8 phone get it first.
Anyways, iPhone may not be the gadget king, but I use my iPhone mostly for reading web pages, and email. That alone is a reason I won't switch yet. I may entertain Nokia Win 8 phone, but for sure not a Android.
Also, this whole walled garden is BS. You can jailbreak your iPhone, and I haven't heard of one hack that I would want on Android, that my jail broken iPhone can't do.
Both OS are great, but for now, there is no reason for me to switch to a "mighty" S3.