Stuart,
None of the Blackberry phones I listed "fully" work ..... everything works except the missed calls / received calls / dialled calls lists don't get updated.
The first time the phone syncs, it updates these lists, but then after that it never does, the display will always show the first list it sync'd ... years later!
But that's it, you can scroll through the address book (which duplicates entries where you may have 1 contact but 2 numbers i.e. office and mobile) and make receive calls fine, incoming numbers are displayed along with the name if its in your phone.
Cheers,