Nola and Focal are quite different speakers. No traditional, boxed design will give you the openness and dimensionality of the open baffle Nola's imo. Add to that the most natural timbre and tonality.
(ok right at the start i'm going to make clear i'm comparing my focal stella utopias with my previous speakers, the Alon Phalanx. if anyone wants to point out the modern improvements that make this post irrelevant i will gladly listen.)
the thing is, the Focals are more forgiving. they make all music sound good, i found the Alon's could be, well, unforgiving. i enjoy more music more of the time through the Focals, even if they can't scale the heights the Phalanx could with the right material.
i'll try that one again...with the Alon's i found i would listen to individual tracks and move on fast. with the utopias i listen to the whole album, new artists, new genres. they are on the side of the muician, where the phalanx betrayed their (in my case) mastering studio roots by telling you exactly what the musicians and producer had done. the Focals will tell you what they meant to do.
i have a theory as to why this is. ok i have spent far too much time thinking about this today, but i have enormous respect for Carl, massive affection for his products and no desire to malign either.
my understanding is that Carl is a virtuoso musician. i believe the Phalanx to be perfect for listening to other virtuoso musicians. if this is all you listen to, you would always have preferred the Phalanx.
however my choice of material is, shall we say, broader. it's not all Fluke, Hybrid, Trentemoller or Alt-j, often it's dj mixes or reggae productions of pretty iffy quality. in these instances the Phalanx oft became instruments of torture.
so i have known in my heart for a while my perfect scenario is two systems, the one i have now, in my living / reception room built around the Stellas, plus another, more private, in a withdrawing room and built around Nolas.