during those times, I was using 3dsMax + OgreMax. but as I heard OgreMax is kind of dead nowadays, dont know the details.
Blender is a quite popular 3D editor, Ogre3D is still very popular, so I assume Ogre exporters for Blender should work reasonably well.
I would suggest trying following instructions in Wiki for Blender, if that doesnt help contacting writers of the Wiki page