Templeton is right actually. But alot of people that want to make a bid decision like buying an iPhone like to hear verbatim: "you should get this phone"
the iPhone 4s has alot of great features that meet many people needs, like the ability to make calls, and call FaceTime Addresses for video conferencing. Send free textmessages to other iMessage capable phone (my favorite) and being able to sync multiple devices witht he same information (like an iPad)
for many people that is a great selling point for an iPhone 4S, and siri (although still in BETA form) is a great tool to play with!
Granted i didnt use most of the features like calendars and reminders at first, but after making it a habit i see how useful it is.
Also taking photos and using photostream is great as well!
If you already have a Mac and a lot of iTunes "stuff",
the iPhone makes the most sense. The integration is
seemless and pretty much "just works". There will be
some that will argue with that, not many I hope.
I had previously owned an iPod touch and amassed quite
a bit of music (~24 gig or so) and was trying to decide between
an Android phone (Atrix2 and Galaxy SII in fact) or an iPhone.
After much investigation and forum browsing, media integration
is really pretty much a managerie of different software with Androids
and not any really all inclusive solution. Even syncing other stuff
is some what adventerous and you need this app or that app, and
run into, "Well it works on this phone and not that".
So, in the end the decision was pretty simple for me since
I owned Macs and my media was "Apple centric" so to speak.
Bit the bullet and got a 64 gig 4S. To date, I am so glad I did!
After all the nonsense at the AT&T store was done, went home
fired up my Mac, started iTunes, plugged in the iPhone, went
and had a sandwich and came back and the phone was up and
running and fully functional.
Now, if you don't have a Mac but have a signifigant investment
in iTunes, I would still suggest an iPhone.
I will say, I did experiment with an LG Thrive Android GoPhone
primarily to decide if the purchase of a good smartphone and
the obligatory service contract would be worthwhile. I will say
Android is different and has some good features, but for media
integration and OS integration for Macs, the iPhone wins hands down.
P.S. Battery hogging issues are just as numerous on Android forums
as they are here, especially with the 4G-LTE phones.