It is highly unlikely you will hear the benefits of your dac and amp relative to the substantial frequency and directivity characteristics of the speakers. I would go with whatever you think you'll prefer based on the speakers alone. And if you don't have another way of doing room correction, then that is definitely an advantage for the neumanns. The neumann's will probably be a little more neutral, but the Focal's have wider directivity and should sound wider with most content.
Without any direct comparisons of the speakers available, all we have is frequency response information available. As noted by
@Helicopter, they are very similar.
For example, I'd generated a spin for the Chora that looks very similar to the arias, even though this was back when I was only doing incomplete spin measurements. Solid are my measurements of the Chora, dotted are Amir's for the Aria.
View attachment 118044
The Chora actually comes off looking a little better, as it doesn't have as much of a 800Hz hump nor that PIR/SP dip at 3kHz but given the incompleteness of my measurements in this case, I wouldn't be completely sure. And bass differences could partly due to errors in my nearfield summation.
Soundstage network, which measured both the
806 and
906 in an anechoic chamber, shows this similarity even more dramatically, at least in the horizontals. Here are the measurements at 45, 60, and 75 degrees (I've colorized the Chora to blue):
View attachment 118047
It is rare for two different speakers to measure so similarly, even if they are using the same basic tweeter design. Once again, the chora appears to have just a hair more bass, although the soundstage network measurements are not fully accurate below 80Hz . In any case, the results are extremely similar, to the extent that it's not much different from what you might expect from simple sample variation for the same model, let alone two different ones.
I suspect that if there is a meaningful difference between the two speakers, it would have to come down to something other than frequency response. Technically, the Aria's flax woofer is supposed to be a slight step up from the Chora's Slatefiber woofer, but at least in terms of THD, soundstage network also shows similar performance here.
Unless the Chora does in fact have a little bit more bass, I would be surprised if listeners could consistently choose a better speaker in a blind test. So basically, I think you'd be just as fine saving money with the Chora, but just choose whichever you think is prettiest.