I'm extremely impressed so far. Probably worth noting that I'm not someone who has listened to a massive range of different speakers and have never been to an audio show. I started with Paradigm Atoms when I was 21 and bought LS50s about 10 years ago. I've also listenined to various models of Dynaudios and KEFs that friends have had. The Sointuvas sound (to me) significantly better than all those, the bass in particular, is amazing. I listen to a range of stuff from old country and folk to doom metal and for the most part it all sounds great. I am, however, far more likely to notice and be put off stuff that is recorded badly, which I guess is a trade off. Also they seem to be pretty sensitive to positioning, and the 'sweet spot' is seemingly narrower that my LS50s were.
They are also really heavy!