How much more productivity are you getting from the iPhone than you were from your Android phone? What kind of work are you doing with it? Give some of examples of what you like better on the 4S.
Hey, I could totally write some 2000 words on my experience from iOS to Android to WindowsPhone7 and now back to iOS.
But what's the point? Nothing. There are tonnes of reviews out there. Read them.
I'll give you a brief summary --
Operating System Principles - Apple is a software company. They have made great software in the past and iOS is at the peak of it. Not Mac OS X although its 10 times more mature, but iOS understands better what people want, how people want and how it needs to schedule those things.
Everything is smarter. Whether when I'm in my recording studio on my guitar and cannot move and I need to toggle some settings, I open the remote app and it just works.
Whether I need to airplay my current riffs on the TV, it just works.
Whether I need to message someone, the voice control is mind blowing. It is way more precise and faster than WP7 and lets not talk about Android.
The notifications and their preferences are unbelievable. This is how notifications should have been done. Just use them for a day and you'll love them.
All photo editing is now done on the iPhone. I don't need my iMac for that. It's only used for software-development and ProTools.
The applications are just so refreshing. Applications on Android are UGLY. Even if 1 or two look good(which they don't), they miss out on features, functionality and the ease of usability? You need the best example? Browser on Android. It sucks. It sucked on HTC desire. It sucked on Nexus S with Android 2.3.
The applications on iOS provide great choice and are simply beautiful. Look at Chattime or Verbs or Twitter or Facebook or Reeder or TuneIn Radio or Guitar Machine or Spotify or Light. All breath design and functionality. Nothing like that is there on Android and WP7.
I agree Android has widgets which are useful sometimes but even for my brother who liked them at first hates them now due to his 4 hour battery life on HTC Wildfire.
Whatever, to each its own. iOS is a little power house and as much as people think its a grid of icons, its the best thing for probably anyone who wishes to spend £500 or more on a mobile device.
I cannot be more biased if that's how it sounds but trust me, iOS has moved me a lot in the past 7 days. I used to see a lot of people raving about experience and what not and guess what it's true.
Use it for a week and you'll know it. No lies.