For development within Eclipse we will use Alfresco source version 3205 which looks like labs 3b. (already prepared including source as maven install script)
For production-like testing or initial investigation we will use Alfresco labs 3b. (http://wiki.alfresco.com/wiki/Installing_Labs_3#Windows_download_and_ins...).
The Mini Setup will do since we already have a JDK and we will download Open Office separately. For those who already have Open Office, that's one step less.