I'm hoping you guys can help me. I've been an O2 Simplicity customer for a couple of years now, and my trusty old Samsung E720 is starting to show its age. Well actually it still suits me well enough, but it's survived multiple hard drops, falling down the stairs a lot, a dunk in water... It's time for a new one as there's pieces missing now. 
I've been offered an upgrade to a handset contract (rather than SIM-only) with O2, which I'm wanting to accept. However, since to me a phone has always been just a gadget that makes calls and texts, I know next to nothing about the new fangled ones.
I'm quite happy with the idea of moving up to a SmartPhone (I don't want to pay extra a month for a 'brick') and would find one quite useful. The question is, which one?!
O2 don't have a great selection, but I do want to stay with them. My priorities are:
* Good clear audio (I'm partially deaf)
* Proper keypad or at least a decent on-screen one that isn't awkward
* Great camera and preferably HD video recording. The lack of these (and a rubbish small screen for picture viewing) bugs me on the E720
* Playback of XVID and preferably HD video a big bonus
Things like free SatNav is a boon, but not essential. I can't really think of anything else I'd need?
I have no experience of iOS, Android or Windows Mobile so I presume I could get used to any of them just as easily as the next as the learning curve will be relatively the same regardless coming from an old 'brick'.
Ideally I'm looking to pay between £30 and £35 a month all in, but could stretch a bit for a great phone. I don't mind being tied to a 24 month contract if needs be, as (1) I'm happy with O2, and (2) my last phone has 'done me' for 5 years, so...
I only use 250 to 300 minutes a month so I never leave my free minutes aside from the odd 0870 call, so I don't need a massive package. The tariff I can sort, it's which handset to choose that's sticking me.
From what I can see, they offer a lot of Blackberries (great for phone, not so good for HD video playback and camera, I'm guessing?), also the iPhone 4 8GB seems affordable, as is the Samsung Galaxy S and Nokia N8. They also offer the HTC Desire but not the Desire HD (that I can tell).
I await your wisdom. Many thanks in advance.

I've been offered an upgrade to a handset contract (rather than SIM-only) with O2, which I'm wanting to accept. However, since to me a phone has always been just a gadget that makes calls and texts, I know next to nothing about the new fangled ones.
I'm quite happy with the idea of moving up to a SmartPhone (I don't want to pay extra a month for a 'brick') and would find one quite useful. The question is, which one?!

O2 don't have a great selection, but I do want to stay with them. My priorities are:
* Good clear audio (I'm partially deaf)
* Proper keypad or at least a decent on-screen one that isn't awkward
* Great camera and preferably HD video recording. The lack of these (and a rubbish small screen for picture viewing) bugs me on the E720
* Playback of XVID and preferably HD video a big bonus
Things like free SatNav is a boon, but not essential. I can't really think of anything else I'd need?
I have no experience of iOS, Android or Windows Mobile so I presume I could get used to any of them just as easily as the next as the learning curve will be relatively the same regardless coming from an old 'brick'.
Ideally I'm looking to pay between £30 and £35 a month all in, but could stretch a bit for a great phone. I don't mind being tied to a 24 month contract if needs be, as (1) I'm happy with O2, and (2) my last phone has 'done me' for 5 years, so...

From what I can see, they offer a lot of Blackberries (great for phone, not so good for HD video playback and camera, I'm guessing?), also the iPhone 4 8GB seems affordable, as is the Samsung Galaxy S and Nokia N8. They also offer the HTC Desire but not the Desire HD (that I can tell).
I await your wisdom. Many thanks in advance.