The Absolute Sound - ELAC Navis Review

+1 for worthless.

Igoler - 
I have the ELAC Navis, they replaced LS50W for me.  I enjoy them, ALOT.  
Most Floor standing like Bookshelves is a reference someone else made that I can agree with in my experience with mid tier HiFi Gear and speakers from Paradigm, B&W, Monitor Audio, KEF (many different models Especially LS50 and LS50W),  and now Elac.  
They sound great to me, I listen to most all music except with only the smallest amount of Classical and Contemporary Pop amongst my collection.  I got into Vinyl a couple of months ago and these are the albums I went after right away to give you an idea of the listening I like most. https://www.discogs.com/user/OneEyedHito/collection?page=3&sort_by=artists_sort

For me the Elac Navis ARB51 a full and dynamic both, meaning they fill my small treated room with plenty of SPL and they produce a great range of Low, Mid, & Highs without audible strain.
Let me know if you have specific questions and I will try to answer them.

I agree completely with jkreidler. I have them since yesterday and I had the LS50W in my room as well. I don't know if it's fair to compare them anymore since I use an excellent external pre-amp with separate streamer and dac.

The fact remains that the LS50W are fully integrated and for that amount I haven't heard anything better (I used these with the speakers as Roon endpoint).

The navis reach deeper, have more clarity and definition in the midrange with a silky, well defined treble. A deep and wide soundstage with to my ears immaculate driver integration and excellent speed that easily matches the LS50W.

I placed them in a midfield position slightly toed in with 30 cm's of distance between the backwall in an almost perfect equilateral triangle with many of the first reflections to the ceiling eliminated and plenty of distance behind my listening distance that's also treated. 

I had the LS50W and Elac Navis at home and did A/B testing. To try to have a level playing field I fed a signal from my external DAC through the LS50W RCA input which sounded considerably better than using only the internal DAC on the LS50W. My observations were the same that the Navis beats the LS50W in sound quality. Bigger, fuller, and richer sound with the Navis and they scale really well. As I change/upgrade components the Navis keeps sounding better and better. With my most recent upgrade to a Gustard U16 DDC I have been astonished how good the Navis speakers sound.