A very personal call, based on smart thinking.
You think the ARC1 is better than Audyssey & Gennum VXP is better than HQV Realta?
Because I'm pretty sure the THD, SNR, & Crosstalk of the Denon AVP-1 is better than the Anthem, and the HQV Video score on the AVP-1 was perfect 130/130 on Audioholics test.
Well the Gennum VXP is a state-of-the-art video processor, one of the very best in the world.
I don't compare it with the HQV Realta, which is also first rate.
Between these two video processors, it will come down to their small differences on picture adjustments, implementations and video quality minutia.
So, I don't think that one is better than the other one, they are both excellent.
And as for ARC1 compared to Audyssey MultEQ XT PRO, again, they are both state-of-the-art. I think it's only a question of personal preference in your own room with your speakers. Personally, I lean more towards ARC1 for a more accurate EQ, without too much deviation, but it's only my own opinion.
And as for THD, S/N and Crosstalk, I don't think that it matters at all with these two great audio/video processors, you wouldn't notice any difference at all.
In the end, it's a tough call, but after many readings, and customer service favored big time by Anthem owners, I am leaning more towards Anthem.
Anthem ARC1 works perfectly, and the Gennum VXP also does.
Plus the Anthem D2v is well build too, with the best internal parts that are very well implemented for top notch performance audio and video wise.
The AVP-A1HDCI is also top notch, nothing to take away from it.
From what I read, the Sound of the Anthem is very detailed and very high end, with finesse in it's refinement and subtility, smooth and clear at the same time. And the big plus is the excellent customer service, plus upgradeable architecture. So, it's all about fine tuning with your own brains...
And Anthem seems to match this definition better than the Denon.
Bob