Yeah, great discounts are not really had with the 9.8. Very popular item.
The Integra has dual hdmi OUTputs, Reon, balanced outputs.
The NAD has Audyssey curves designed by Paul Barton, most likely superior analog performance, modular design (which is probably a moot point really).
I believe both are Audyssey Pro capable, but I'd check on that.
The Integra is said to run warmer like its Onkyo cousins.
IMO, the Integra is the better deal for sure. The main reason to go NAD is perhaps if you are connecting analog sources. The NAD does NOT have hi-def decoders, and they told me that they have zero imminent plans to implement them, even while having the modular design.
If this is for HT, Id definitely go integra. 50/50 HT/music is a tougher call. You can always add a 2-ch pre to the Integra if you happen to be disappointed with analog performance like some others are. OTOH, some are fine with the analog performance Im sure.