Originally Posted by mevansmusic
wide sweetspot as this is a multiuse living room
Are you looking for wide dispersion speakers or wide sweetspot speakers? It sounds to me you are looking for wide dispersion speakers since you mentioned multiuse, so I assume you'll not be seating in a single location doing critical music listening, but just anywhere in the room.
Because you said your application is 90% movies, then I'd focus more on what center speaker is best, and find the matching fronts.
This is mostly theoretical, as I haven't heard either speaker, so take it with a grain of salt. I'd say the KEF may be a better center speaker choice. The Chane is a 2 way design, and I suspect the crossover is somewhere in the 2K hz, and these type of designs cause lobing issues. In contrast, the KEF Q250C is a 2.5 way design. I haven't been able to find the low pass filter spec for the LF woofer, but most 2.5 are in the 500hz range, so I'd suspect the KEF to be in similar range. This type of designs greatly helps counter lobing issues. Again, in theory, cause I haven't seen reviews addressing this particular problem.
The midrange is 5.25" so bigger than most 3 way designs (4"), but my understanding is that this goes all the way down along with the side LF woofer, and I don't know if that fact lends itself for the midrange to not be as precise as 3 way designs.
In terms of performance, almost every review about the Q series, have them as "full" sounding, so you'll get plenty a bass. They are also known for voice clarity, excellent image and soundstage, so it crosses most boxes. On criticism is that the high may fall a little, so it is not to forward, and some people may like this for movies. Personally, I like speakers more neutral and warm.
In comparison, I hear the Chane are excellent speakers, so you can't go wrong. One assumption I'll make based on what I have read of other people, is the there is a chance the Chane might have better detail, specially because of the type of tweeter used, but KEF may work better all around for movies.
Again, best is for you to hear them, audition them. If I were to go and blind purchase them, I'd go with the KEF based on what I explained above.