If it were me, I would go with option 2 and have both in your home to test because "your" ears are what really counts and the best way know what sounds best to you. I have never heard the Axioms but I have heard JM Jabs and I can tell you they sound really good. Their drivers (Focal)are used in many other company's speaker systems and in the DIY world.
If you do decide the NAD, let me know what you think of it because I am going to St. Louis next month and hope to listen to the 773 somewhere. To me, the extra features come 2nd to sound quality and power. From what I've heard though, you would be happy with either Denon or NAD. I currently have a Denon avr-3300 and it's time for upgrade. I would stick with the 3805 if you go Denon for the extra power though.
Good Luck.
If you do decide the NAD, let me know what you think of it because I am going to St. Louis next month and hope to listen to the 773 somewhere. To me, the extra features come 2nd to sound quality and power. From what I've heard though, you would be happy with either Denon or NAD. I currently have a Denon avr-3300 and it's time for upgrade. I would stick with the 3805 if you go Denon for the extra power though.
Good Luck.