Proud former owner of Elac B6 here. I would highly recommend Elac but you need to know the differences between Elac and KEF sound.
Elac - very musical and superb midrange, the entry level Elac will play vocal and simple music very well with upstream gear in the same price range. Elac are fun and make you feel excited when listening to music. Also very good when double up as home theater speakers. The speakers require extensive continuous playing hours to break-in 40+hrs in my case. The difference before and after was very significant that when I used an unbroken in Elac demo pair in my local store to find an amp the sonic gaps were wide. Also, the Uni-Fi series use aluminum and at least during break in period you'll definitely notice the initial soda can like metallic sound. The metallic sound is known to go away and smooth out after break in.
However, I was unable to play complex music like big classical piece with lots of orchestral instruments without muddled sound. I knew for a fact that the Elacs could do much better with more expensive gear but then I ran into the dilemma of buying DAC/amp that would cost 5x-6x the price of the speakers ($1000 DAC + $1000 amp) which didn't make sense to me and I never went down that road.
If you want to try Elac/KEF and don't plan on investing over $2k of upstream gear, I highly recommend going with the new Debut B6 with walnut finishes to start your audiophile journey. If money is no issue, I would recommend waiting on the new Adante bookshelf coming out this year for $2500, a new creation from Andrew Jones when cost is not a concern.
KEF - requires much higher end gear than Elac to get good performance, something of a big cost to factor in. Most people I read about who get great performance from their KEF LS50 are running 2-3k upstream gear at least. LS50 like all KEFs have a laid back more relaxed nature (relatively speaking). I listened to the LS50 in the store with Rega Brio-R and the performance was poor, most likely just bad gear partnering. Versus Elac, the sonic 'style' are very different and you must listen in order to judge for yourself.