I personally find the DBX a bit on the slow side when it comes to turning -- and with all three hardpoints facing forward only, it is not such a good fighter in my view. But, boy, it IS cool. Both in terms of temperature and in design.
So, I really love it, for exploring on one side (while it lacks the Asps capability of carrying along vehicle hangars), and most and foremost as a Ratship!
On the topic of Ratting, I had quite a nice evening yesterday -- first hunted 2.1 mil credits to fill up the reservoir, then, after changing into the DBX, having a famous long-sc-.range Code Red case ... client tried to travel to the next system via sc and ended up on CR at 900ls from the star.
So we build a Rat Chain to save him, in which we succeeded. Read more in the INARA logbook entry here:
http://inara.cz/cmdr-logbook/954/7222