I agree the KEF LS50s are awesome speakers for the money, which is why they are a stand-out in their price range. I listen to a pair most days, at my partner's place.
The KEF Reference series are 10 to 30 times as expensive, and in my opinion are even better value! So obviously I think my Reference 1 speakers are good. The same coincident tweeter / mid-range unit is used in the Reference range. The more expensive, the more bass drivers you get, which is not necessarily a good thing for overall coherence.