I did an A/B comparison with the N805 and the VR2 and to my ears the VR2 was cleary the better speaker. I have also extensively listened to the VR4jr, which I feel are better than the VR2s. Only missing piece of the puzzle is that I have never heard the Signature 805.
This question can also be room dependant, in a smaller room the Signatures may be easier to integrate and could reinforce the low end nicely. Both the VR speakers have deep bass, and ambience drivers. What this means is that the VR speakers should be pulled out from the front wall for ideal placement which cleans up the low bass and allows the ambience driver to shine.
Hope this helps.
This question can also be room dependant, in a smaller room the Signatures may be easier to integrate and could reinforce the low end nicely. Both the VR speakers have deep bass, and ambience drivers. What this means is that the VR speakers should be pulled out from the front wall for ideal placement which cleans up the low bass and allows the ambience driver to shine.
Hope this helps.