At quieter listening levels I think the Elacs are the better speaker, but the Cabasses play better louder. The Cabasses could really use a crossover rebuild, I think, though they're likely getting sold. They've been in storage for awhile, replaced in our small Chicago apartment with bookshelf speakers to save space.
When played very loudly the Elacs kind of lose it, hitting a wall because of their size and other limitations. It seems to be where the compromise is in them... they're composed and sound fantastic up to a point, then just get boomy, the bass getting one-note after a certain volume. Below that point, and I really like them...though if I had the room, the Quads would be in here. They were in my bedroom in Chicago, so it wouldn't be the first time. But that room was twice the size of this one.