I have not heard the N3, but I have heard the N2x and I still own the A/V-1s and A/V-2s
(A/V-2 on right)
I ended up buying the Carnegie CSB-1 instead which is a "manufactured" version of the N1. I rebuilt the x-overs with his Sonicap kit too:
The BG tweeter is very nice. Mids have always been good from GR, so it is a solid performer IMO. I'd say I prefer the RAAL that Dennis is using in the Phils though.