I've hard multiple KEFs and the Revel M106. Unfortunately not in any of my rooms and the speakers in all cases were not properly positioned. Therefore I can't make any meaningful comparisons to any of my Axioms. I can tell you the M5s are a more refined speaker design than my old M80v2. Hands down, I'd rather have the fidelity, soundstage and imaging of the M5. My review here under "Mojo":

https://www.axiomaudio.com/m5-bookshelf-speakers


House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated