My job is with property management and I consider that a good, reliable smartphone is essential. I sync mine with Outlook and keep all of my appointments and contacts updated between the home system and phone.
I am not familiar with the Blackberry so cannot comment on it.
IMO your laptop would benefit from an increase in RAM.
Why are you paying £1.50 per month for Outlook?
For e-mail I use IMAP rather than POP as I find it easier to have e-mails synced on the phone and Outlook.
It may be worthwhile investigating mobile broadband.