there are much better touchscreens then the iphone.
Look at the htc diamond or htc pro
http://www.gsmarena.com/htc_touch_pro-2413.php
http://www.gsmarena.com/htc_touch_diamond-2368.php
If youre looking more for a business related phone, check out the blackberry thunder (do realize it is the first RIM touchscreen UI, so it may be very buggy and not worth it yet)
http://www.gsmarena.com/blackberry_thunder_9500_surfaces_taking_on_iphone_3g-news-542.php
"Reality is that Apples touch technology is streets ahead of its competitors and they have patents on the dual touch that allows the easy zooming"
I dont want to make you sound like a fool, but please, do some research before you speak of this.
The iphone is a touchscreen phone that lacks one of the most important features in a touchscreen.. FEEDBACK. there are two main types of touch FEEDBACK . Haptic feedback and tactical feedback. Tactical feedback is a localized movement with a physical response. When you push a button on a remote control, you feel the button move, and it is confirmed by a click or stopping point. this is tactical feedback. This is very advanced for a touchscreen, and as of now, nokia has been the only company to show a proof of concept.
The other type of feedback is known as haptic feedback. Haptic feedback is not localized, but is generalized. When you press something, the entire device will move/vibrate to confirm a button has been activated.
While nearly every other touchscreen phone on the market supports haptic feedback, this is absent on the iphone.
Next, the dual touch feature really is nothing. Any phone that has a "mapped" internet browser will have this feature.
Mapped means that you see the entire image of a website, and you click to zoom in... very very common with mobile internet browsers.
All three phones i listed have haptic feedback, as well as installable mapped internet browsers.
all three phones are gsm (in fact the BB and touch pro are hybrids.. cdma and gsm compatible)