Which Product should i get??

Hi all,

i need to achieve the following objectives:-
1. Desktop management - mainly patch management for Windows clients (XP/Win7) and Windows Servers (2003/2008). Track hardware/software inventory. Software deployment is a plus.
2. Exchange reporting - mailbox size and storage size for Exchange 2003.
3. File Server reporting - NTFS permission report for all network share.
4. Active Directory reporting - users list, password policy,etc.

i initially looking at the Desktop Central for (1) & (4), and then Exchange Reporter + for the exchange reporting, and ADManager plus for the File Server reporting (NTFS reports).

I see features is mix and match for all these 3 products, and for the NTFS File Server report, it's like not really cost effective to get the ADManager Plus just for that.

Appreciate someone can give some opinion and advise.

thanks.
Ryan M.