I think, at the end of the day, it all comes down to one question you need to ask yourself:
"What do I want out of a mobile phone?"
This is what I did and I knew the following:
1) I hate touchscreens, cannot get on with them, tried iphone - lots of fun, but just don't get on with it.
2) I want a phone for email, text, physical keyboard, phone functions (obviously!), reasonable camera with flash and music player (not fussed about it being top quality)
3) I would like Facebook on my phone, but other than that, I am not interested in apps, it's more for business. Besides, I have a new ipod touch for apps and that sort of thing!
4) I want something with a fairly decent battery, can't be bothered to remember to charge it up each day
...and there you have it, ended up with a Blackberry Bold 9780.
It's a decent enough phone, had it for two years now, very reliable and robust, never broken, love the keyboard and it serves me well for texting and email. The camera is a 5mp one with flash (and auto focus) which actually takes quite good images - I use it alot.
The battery (even after 2 years solid usage) is still reasonable. I can go with medium-ish type usage for about 3 days without charging.
I am only on a PAYG contract, but, rather bizarrely, I get free internet access due to some sort of glitch - so another reason I wouldn't wanna change it!!
So, hence really why I say you do need to ask yourself what you want out of a phone - and then make a decision accordingly.
Blackberry's are not as much fun or as useful as iphones, but if you want simple business like functions and fairly good camera and music player then perhaps they are worth considering (well, my bold 9780 is great for all these things, cannot comment on other models as I have no other experience)....