I have the 9.2 DC Cantons and they are great speakers. Very neutral and a surprising amount of bass for their size and very attractive. You might not "need" a sub, but they will definitely benefit from one.
I haven't heard the LS50, but have the Kef Reference 1 in my main system. Not a fair comparison, but if the LS50 have some of the same characteristics, which I assume they would, you may get better soundstaging and imaging with the KEFs.
My favorite monitors are Harbeth P3ESR. You might not be able to push them as hard if listening loud is your thing, but to me they sound better than the Cantons and share many of the characteristics I like about the KEFs, lots of detail, great midrange, good imaging.
Back to the listening loud thing... I blew a woofer in one of the Cantons, so I wouldn't push them too hard either.
I haven't heard the LS50, but have the Kef Reference 1 in my main system. Not a fair comparison, but if the LS50 have some of the same characteristics, which I assume they would, you may get better soundstaging and imaging with the KEFs.
My favorite monitors are Harbeth P3ESR. You might not be able to push them as hard if listening loud is your thing, but to me they sound better than the Cantons and share many of the characteristics I like about the KEFs, lots of detail, great midrange, good imaging.
Back to the listening loud thing... I blew a woofer in one of the Cantons, so I wouldn't push them too hard either.