Hi Blueprint,
What features are you looking for in particular? I'm not a huge fan of Blackberry as there devices always seema bit 'last year'. Plus they dont sell in the sort of volumes HTC/Nokia/Sony Ericsson sell so cant afford to use cutting edge technology /features or even the same hardware quality.
Something like always-on mail would let you get email/calendar/contacts etc on your own phone and you could pause the emails so you dont get bugged with work after hours.
You can get a trial of the POP3 version from
Work Out Of Office Ltd. : Always-On Mail Internet Edition
and the exchange/Domino version is on there somewhere too.
Mann134