I never heard the KEF system, but judging by the size of the satellites, I would think that the Axiom would be a big improvement. Either if it is worth the price different is up to you. Just don't forget that Axiom as a 30 days trials so you could try it in your basement and you are not happy, could always send it back, no questions asked.

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."