Graphyx 8's and the 6's aren't far behind. I don't have a whole lot of speaker wisdom but I'm not alone when thinking they are underdogs. The 8s sound great down low and dig deep but they can be very bright but that's the dome highs for ya. The 6's have a cone high and seem a lot softer on peaks. I'm not sure of the 6's xover but as pictured the 8s are beasty!
Seconded.
I have a set of SP-8s. They are terrific!
Their cabinet finish quality is on the low side, chintzy wood grained vinyl aver particle board.
But you cannot fault the sound.
Because of the strength at both ends of the spectrum, the loudness button is effectively on by default.
I listen at modest volumes levels, so this a positive attribute for me.
They are reasonably efficient as well.