Bought an iPhone at Xmas - had it for two weeks and sold it. Just didnt get on with it.
Absolute fingerprint magnet. Too big and heavy in my opinion. Too flash - felt like a **** bringing it out at times. Couldnt use my Bose earphones with it (or Sennheiser & others) because of the way they have recessed the 3.5mm socket) - needed to buy an adaptor at additional cost. Dead pixels out the box. Headline features like 'You Tube' were actually quite limited as the videos have to be converted (by YouTube.com) to run on the iPhone player i.e. not all videos you can access on your PC are viewable on your iPhone. I could go on!
Although its packed with features and has certainly raised the bar for all other manufacturers, i found its main failing was actually as a phone - which is surely its primary purpose. I thought it was rather limited - you couldnt send texts to multiple recipients, couldnt send photo (MMS) messages, the battery life was poor and worst of all was the call quality - if i was out and about in a remotely noisy place i could hardly hear what the other person was saying - even with the volume up full.
The quality of the screen was very good though and the internet browsing very easy to use.
If you were set on getting one i'd recommend getting one thats been unlocked or jailbroke, then you can just slot in your existing SIM (or sign up for an o2 simplictiy contract for £15 a month) and away you go.
I wouldnt get hung up on the 'free internet access' being offered on some of these £35 & £45 contracts either as i found that about 85% of the time you are near some sort of wi-fi hotspot when you're out and about and can surf for free anyway. Just set the iPhone to search for networks, select an unlocked one and connect.
I dont think i'd be tempted back to the iPhone either - the only big difference about the new one is 3G and thats not exactly cutting edge - its been around for ages and used by many 'older' phones. I am interested to see what Nokia's iPhone rival has to offer though when they release that.
Just my thoughts on the iPhone - not saying they are right or wrong.
P.S. - Ho, they are called Blackberry's - not Blueberry's