xti is right.
how much I love the 1.3se, the C1 is much better.
soundstage, mids and bass is like the c1 is 3 times bigger speaker.
you get more detail and texture.
Tweeter is a little soft, i recommand to find the mk2 version if you listen
low levels.
Also not to difficult to drive, but they provide more potential,
and bigger amps gives you even more control.
But i understand why 1.3se is, i tnink, one of the most wanted ;).