Will the REAL app please stand up?
 

Folks, after my initial euphoria when Nokia PC Suite pushed 3000 contacts from Outlook 2007 to my N900, I have come to be very disappointed and frustrated with the built-in PIM/PDA/Phone package. Many others and I have filed bug reports and enhancement requests, but I'm not sure if Nokia can or is willing to produce the real killer business app that we need and want for the N900? So I'm wondering this...

On Maemo 5, is it possible to replace the built-in PIM/PDA/Phone package? If so, are there any competitive packages out there?