I almost accidentally bought a pair of KEF Reference 1 speakers to tide me over while repairing my Quad 2905 electrostatics, which are widely recognised as very accurate speakers. In many respects I prefer the Reference 1 - it plays a lot louder while keeping the imaging and accuracy I am used to. I mainly play classical music and go to a lot of live concerts. Should possibly mention that my amplifier is a Krell KSA80 class A which has huge current reserves.
Your speaker choices listing has the Reference 3 immediately under the Reference 1. They are identical speakers except the 3 has a duplicate bass driver in a d'Appolito arrangement. The Reference 5, not in the listing, has four of the same bass drivers,
Yet speaker choices describes the Reference 1 as 3/bass+concentric and the Reference 3 as 4/bass+midwtweet+bass.
To really understand why the KEF is outstanding, have a look at the KEF White Paper REF-White-Paper-201219-LR.pdf
These aren't beercans, neither are they bookshelf speakers. I prefer them to every other speaker I have heard iincluding Sonus Faber, B&W and behemoths costing 20 times as much.