I am really reluctant to get into a vs debate because of personal preferences and the extreme opinions on iPhone on both sides has destroyed so many forums and I don't want that to happen here.
Most of us here having been using Symbian for donkey's years, me since 6600, right till N95. I haven't really played with WM but have a blackberry from work for the last few years. From what I have heard WM is buggy untill you go to XDA for cooked roms or something, but that's forum opinion. BB from my personal experience is rock solid for email and outlook integration but not much of a consumer OS imho.
That leaves Symbian, iPhone and Android. I don't like Symbian and Nokia's business model, the build quality is cheap and plastiky with atrocious keys and faceplates on 'very expensive' phones and untill the N95 8GB they were seriously scrimping on ram and delivering an awful laggy end user experience. This when ram is and has been dirt cheap is inexcusable and reflects Nokia's poor attitude to consumers, I find their business model is not interested in the software or UI side of things, this when many people choose Nokia for symbian so UI and OS is important, and more interested in offloading drip-drip feature strategy, as in 2mp-3mp, 2.2-2.4 inch screen and charging a huge premium on these. There is zero innovation and huge premium on consumers.
They could get away with it before but not anymore I feel. I paid 24k for N73 saw no real need to move from N73 to N95 for 29K I think and I only used N95 8GB because it landed as a gift. Infact I made up my mind not to spend more than 15k on phones anymore because I am not seeing the value.
There is more to phones than features, there is also 'implementation' of features and end user experience, 3G is not going to be very useful on a 2.2/2.4 inch screen is it? What's the point? Nokia has been offloading phones with 'features' I can't use, or use well, what do I do with 3G and a browser on a 2.2/2.4 or even 2.8 inch screen and keypad? The biggest challenge and limitation of 'smart phones' has been screen size and keyboard and here I feel Apple innovated and executed with a fantastic form factor, 3.5 inch with Qwerty and yet in a handy form factor. That's game changing whether you like Apple or not. There was a huge gap in the market which Apple exploited, now others are coming on board. If Nokia had built something like iPhone first it would have been 45-50k without doubt. A big screen improves every interaction with the phone and it really comes into its own for things like internet use which is a challenge on Nokia. Even things like browsing your photos or videos, playing games, using apps, using the phone itself is nicer on a 3.5 inch screen, and the iPhone screen quality and font display is top notch. On top of this Apple has executed a fantastic touch screen UI that is fast, responsive and nearly 'liquid'. I am of course referring to the original iPhone with very good build quality compared to any of the Nokia's I have owned which was not as buggy as the iPhone 3G with multiple issues. But it all comes down to personal preferences because for some people mms, video, hi res cam, bluetooth stereo are too much to give up and for others a small screen too little for any smartphone functionality.
That's just the device, then other things like marketing model, price, locking come into the picture. And as much as I like what Apple is doing to the device itself and the OS I am NOT buying a locked phone unless the plans is irresistible like some in the UK and the phone is heavily subsidized and even then I am extremely reluctant to support a 'closed' model which Apple is. On top of that I am certainly NOT paying 30k plus for iPhone or any phone unless I get something extraordinary. The value equation has changed for me over the years and I don't see how 30k is translating to value for me. I am not interested in snobbery or showing off, I am interested in the phone and what I can do with it to amuse myself. I have super high hopes on Android and I am really wishing it doesn't get messed with its openness and pricing but I know it will. In my opinion most of these phones should be around the 15-20k mark max, I was hoping iPhone pricing and Android would disrupt the pricing market and drive more innovation and customer value but I am skeptical now. So tinkering will have to happen elsewhere.