Should I get the Blackberry 8800 or the Blackberry Curve 8310?

[m a a a r i e l]

I'm thinking about getting my first blackberry, either a used blackberry 8800 for $159.99 or a used blackberry curve 8310 for $179.99. Which one should I get, and why? Are the qwerty keyboards easy or hard to use? Please help

Thanks.