What is the difference between the different types of blackberry?

[A]

Just wondering if anyone could summarise the differences between the different types of blackberry e.g. bold, pearl, storm, curve, torch? which is the best? what would you recommend? I send about 100 texts per day, need access to facebook, twitter and email. I really like BBM too! I currently have a LG 500 (Cookie) and it's absolutely rubbish!

[PETERDEREK]

I think the best thing to do here is to give you a site where you are able to check out all the blackberrys,you get all the specifications come up simply by clicking on the picture of the phone
you are interested in,you are then able to print off the sheets you find would suit you best
and browse at you leisure