Which blackberry shall I get?

No It's my birthday and I want a new mobile phone. I definitely want a blackberry but there are so many to choose from and they all look the same. Some people say they all break and are s**t phones but I really like the look of them. Which types are there, and are their different models of that type? My one criteria is that I want one which is solid in that it doesn't slide if you know what I mean. Which is the best and why? Please help. P.s If you could post a picture that would be really helpful.... Thank you so much!