Don’t know if this will help we sell both of these brands ie Kef and Dali
The Dalis offer a very unique presepective on sound reproduction.
The combination of soft dome tweeter for a sweet overall treble balance with a ribbon supertweeter added in around 14k to add a bit of air and sparkle creates a very unusual sound.
The Dali’s have a great sense of warmth and liquidity while still offering a good amount of detail, the Dalli’s bass is tight with a bit of roundness that makes them sound a bit more bass heavy add in an absolutely stunning cabinet and a great size overall makes the Epicon 6 very hard to beat with the right electronics, they sound amazing.
The Kef Reference offers a bit more overall clarity and is a fantatic imaging speaker, also with great dynamics it is a dynamic monster and is a cleaner overall sound then the Dalis because they are more neutral.
Personally I find the Dali’s to be more magical of the two.
The Aeriels are competant speakers with low coloration, in terms of both Kef and Dali, both of these companies produce superior drivers.
The scanspeak tweeter is a good tweeter and supposedly goes up to 25kk they don’t sound that airy at all, we have had numerous speakers use these tweeters, they are very clean but not magical in terms of air or clarity.
Audio Doctor NJ