way to many bugs, I would go droid x or similar high end android phone with full qwerty.
The weird issue where something makes the cpu go to 100% and almost all ram is in use while the phone should be on idle is just too much. Nokia needs to fix this or DJ Steve needs to complete his android port to n900 with success.
The inability to support mms natively (no the mms client while good is not integrated fully into the OS), to fail to support google calendar, mails and tasks is a joke. The media player is powerfull but the controls are awful.

Just to many issues, many of them easy to remedy, but not likely...