Just went for my second audition of the LS50s with my dad. Fantastic mini-monitors that sound more like small floorstanders in terms of bass extension and scale, when set up well. Dynamics were not lacking at all for the levels and music I auditioned at. Overall soundstaging is up there with the very best, due to the supremely coherent coaxial design. The type of speakers where you could see where they were and still not be sure if the music was enamanting from them - they disappear. The crossover is also masterfully handled. I couldn't hear the existence of a crossover at all. They had a sense of immediacy, pace, speed and rhythm that is basically as good as it gets with multi-way speakers. Just short of planars, crossoverless full-rangers and electrostats, but a more balanced presentation. Great build quality (though made in China) and smart design. Truly a state-of-the-art mini-monitor. Similar offerings from Quadral and Neat paled in comparison IME. A future classic, IMO.
BTW, there's a KEF showroom here (opened by KEF themselves), and word is the LS50s are not limited editon, but limited production. Production (not sure if sale applies too) will end on the 51st Anniversary of KEF this year. Meanwhile, they will churn out as many LS50s as possible, so do take your time to weigh your options and audition it if possible.
Overall, a great buy. I wouldn't worry too much about stretching your budget though. The LS50s are relatively unfussy about stands. Hell, KEF themselves placed it on top of a Q900 during my audition. Cheap and good stands from the likes of Atacama, filled with sand or something would do the trick. Also, whilst the LS50s are super-revealing of upstream components, you don't feel like they limit the LS50s in any way. The showroom I was in literally demo'd the LS50s on the entry level NAD integrated (C 370, I think), and it still handily bested anything new at its price range, provided you use it in a small to medium-sized room.
Edited by Dissonant - 1/27/13 at 9:46pm