I would say there a lot better than the 2001, and at least as good if not better than the 3001. Seeing as you have bought one for the centre, getting another 2 for the rears would keep the same sound and look running through your system.
So u think i should stick with the Gallo's for the rears aswell?
They wouldn't be bad as rears as they would hardly be noticeable because of they size.