There is just something about them, I cannot quite put my finger on it.
The IT07 are indeed better at most things, but I find the smoothness of the Hook while still retaining clarity much like Amp13 is with the DX. And because of that, even cranking the volume a bit they still remain smooth and non fatiguing. All in all they are just different, which makes them keepers in my camp.
when I have a lot to choose from and my hands always take the same transducer, that is the argument by which I decide if they are better or worse... regardless of the price.