Blackberry or iPhone?

I’m considering an upgrade to one of these two phones from an unpopular phone, so I have no experience or background history with either phone. Now, I’m no techie – so all of these names and SMS whatever doesn’t help unless you dumb it down for me… but this is what I know and don’t know about each phone through pros/cons.

iPhone
Pros:
– very fast
– high resolution screen
– a fun toy?
– a flashy new phone that everyone has
Cons:
– keyboard hard for me to type on (will I get used to it or will I forever suffer from “fat-fingers”?)
– new versions come out which are even better, which I will want because my version is old and will end up paying full price for each upgrade
– already have an itouch/ipod – so I have the apps, half of which are unused, so I already have an “apple toy” – do I need another one?
– to check email, I must open the app for updates – don’t get notifications unless app is open (not sure if this is true – but if it is, I guess I’ll consider it a con)
Blackberry
Pros:
– great in the work office
– good email
– good keyboard (which my “fat-fingers” will be able to type on)
– not a touch screen phone, so no problems with possible touch screen accidents
– good call quality
– free texting to all other blackberry users
Cons:
– not as fast
– not as many apps
– possible “butt-dialing” issues? (again not sure about this – correct me if I’m wrong!)

Ok – sorry for such a long question… I guess what was supposed to be details turned into a story (I’m new at this- forgive me!)

In all, I guess I’m asking – should I get a blackberry or an iPhone? How would you convince me otherwise to get whichever phone you prefer if you were in my situation and despite its cons? And, the most (or one of them) important question of all… the prices! For the phone, or the plan either one! (though that may be slightly harder to answer)

Thanks so much for your time! (Must’ve been a bore reading all of this)