On the Blackberry Bold, what is the difference between the model numbers?

-Like some say 9100, some day 965o, etc...Lol I have 9780. :D

Well it just is like the different types of Blackberry Bolds.

The newest one is 9780 and the one below that is 9650.

The 9780 has more features and is faster than the one below it, the 9650 because it's the newest one of course.

Lol it's like iPhones. The newest and best one is the iPhone 4 and the one below it is iPhone 3GS. They are both iphones but the iPhone 4 is just better and newer. (: Hope I've helped!
rather the same as different samsungs, nokias, etc, different models that have different specifications