I think the E series Nokias function similarly to the Blackberry (real-time email). I have a Blackberry Curve provided for by the office and I struggle to use it. Took the SIM out and put it in a simple Nokia 1101.
I think the Nokias are more user-friendly, especially the internet browser.
what black berry? the new storm look good but no WLAN so if you dont have 3G or any data plan your screwed, video sucks and ect. pro's the 3.15mp camera other than that your better off getting a iphone.