One very big difference is that the 9.9 has Audyssey Multeq XT and the 40.x's only have multeq.
The 40.x's can be found for maybe 1/2 the price being asked of the 9.9.
You might also check out the 80.1 because the 80.2 is out and shipping to dealers, so you might get a great buy on the "old" model.
The 40.2 is Hdmi 1.4, the 40.1 is Hdmi 1.3
The 40.x's can be found for maybe 1/2 the price being asked of the 9.9.
You might also check out the 80.1 because the 80.2 is out and shipping to dealers, so you might get a great buy on the "old" model.
The 40.2 is Hdmi 1.4, the 40.1 is Hdmi 1.3