People say that the REF line is a baby Blade but for me it is not like the Blades. The Blade is my fav speaker and I unfortunately cannot fit it in my house. The next place I move to will have space for the Blades.
The REF line does not disappear like the Blade, but then again nothing I heard does. I found the REF1 was my fav since it did a good job of disappearing.
My current office speaker is pretty good and only available used, it is the Thiel CS3.7 and sort of sounds like the Blades.
I like the Yamaha NS5000 and will get that one if I continue to stay at my current residence. It is a fabulous speaker. Do not let the bookshelf designation fool you. It is like a floorstander. This is my replacement for the Blades.
The Vivid lineup also is Blade like. The Kaya 45 maybe affordable.
BTW - some used KEF Blades were selling for $10K to $13K in the recent past. KEF will be upgrading the tweeter and mid driver with the META design very soon. That may cause some more used models to show up.