Concept-wise, I like Kef for some good design decisions; concentric tweet/mid (Uni-Q), force-cancelling woofer arrangement (Uni-Core), and non-flat cabinets (Muon, Blade, Meta). While these attributes set the stage for good performance, downsides are; metal tweeters (don't sound good to me), low perfomance/$ (questionable value), and my impression is that being a mass-market producer - cabinets/crossovers/drivers/materials are the product of them spending more on finding ways to improve profit margin as they do finding ways to improve performance. I put Kef in the category of Bose - excellent engineering capability mis-focused on profit and an even better marketing department. Can't fault Kef for this, they exist to make & sell speakers for profit - just like any other speaker company. I'd say they're doing a fantastic job bringing these products to market. Specifically, their active speakers are a very attractive 'lifestyle' option for most people.