Can anyone recommend a good business mobile phone deal?

[NigellasGuest]

I posted on geeky stuff but was advised to try here as well -

basically we are near the end of our contract with BT (5 x blackberry handsets, rental £18.50 p/m).

I would like to shop around for better deals now.

Can anyone recommend anything? We just want value for money, no flashy gear or anything although would quite like to keep the blackberries.Any suggestions gratefully recieved!

received, of course

I like my vodafone business contract which I have 5 phones. Though I do have weight of being an original Racal customer ( we had one of the first 150 phones).