Goodbye Blackberry?

I have been a BB user for 10 years now and currently use the BB Curve through AT&T.

With my company cutting back expenses they are requesting I switch fro BB to something like the Blackjack II which will allow me to still pick up Outlook emails but I will save by not have the extra costs of the BB Plan.

How dissapointed will I be with the Blackjack II and is there another option you would recommend?

Thanks