We sell both the KEF and the Adantes.
The Adantes actually sounded quite good when driven by warmer electronics as their top end was a bit peaky.
Where they excelled was at deep punchy bass, excellent dynamics, and created a very big sound stage. The Monitors at $2,500.00 were a lot of speaker for not a lot of money.
The flops were the floor standers which were too tall and not that much better sounding than the monitors.
In terms of the KEF R3 being way better they are different smoother, less punchy with a more focused sound stage.
Given the right electronics and music the Adantes were quite enjoyable
Their issues were the monitors are huge, they required careful matching, and the floor standers are just huge for their size.
They were hard to sell for the price due to the fact that the Adante monitors were not really bookshelf sized loudspeakers so if you really wanted a monitor to sit on a shelf these were just too large.
Overall a decent line but not a standout more applicable to certain listener.
If anyone is interested we have both the monitors and floor standers priced really cheap.
Dave and Troy
Audio Doctor NJ