Email on Mobile Phone

Hi, I am looking for some advice. I have a 6310i Nokia on O2. I would like a mobile that I can check emails, change calendar details etc. I was thinking of a blueberry but not sure. I travel into the North alot, so dont want to pay for roaming charges when checking emails etc. What phone first off all and what tariff on any network? Is there any way that I can move text messages and message folders to new phone? Thank you.

A good nokia on 3 would fit the bill.As I have previously posted you don't incur any roaming charges as long as you are on 3's ni network. Also nokia pc suite which is supplied with the phone allows you to shift data between phones .I use a n73 on 3 and have all my emails forwarded to a gmail account which can be viewed easily on the phone(just download an application from google)

Thank you vandriver.