I haven't heard that particular Proac model, but doing my best to add anything:
Every Proac I've heard (and I auditioned the Proac D20R) has a similar sonic signature: it sounds definitely "sculpted" to me, a sort of richness in the lower mids, then a dip near the upper, and a rise in upper frequencies. So you get this combination of richness lower down, soundstage depth (dip) and some sparkle on top.
It's a very nice sound to be sure. Though I didn't get along at all with the D20R, where I found the ribbon tweeter didn't mesh well enough, and left a somewhat steely character compared to the mids.
In contrast, the Devore 93s, which I auditioned numerous times, give a subjective sense of richness throughout the whole sonic range. They just have a bigger, fatter, meatier sound, instruments more life-sized where the Proac is more reductive. I found the Devore's top end sounded really great too in terms of sounding open with good shimmer for cymbals etc.
For me I choose the Devores in a heartbeat over the Proacs. The Proacs for me always sound like "very nice speakers" where the Devores seem to feel a bit more like a live performance.
I'm quite sure you'll hear a different take from Proac owners.
But...hey...that's me.
I've been wanting to hear the Super 9's too!
mpomerantz, have you auditioned any of the speakers you mentioned?