BlackBerry 7290

I'm having information overload and need major advise!

I'm self-employed and travels all over North America. I think I've narrowed down my options to the 7290 or 7280 - but there is a $300 price difference. Is the difference worth the money?

I need the blackberry because of the emails. I've never had a blackberry, so I'm not sure what i really need. To narrow it down I need to make phone calls and send/recieve emails...

Is there a better option?

Any advise will help...Thanks!