All A&H products are pretty well made and solid construction.
the DX is meant for ITCH so if u fancy that then go ahead. A few things that i would like to point out about itch are:
Although the software supports sample decks…there are no current controllers that will allow you to use the sample decks.
There is less effects and less options in ITCH.
ITCH currently does not support midi controllers.
IF you are purely an EDM dj go with Traktor and an S4/S2. S4 has really easy looping abilites, up to 8 cue points for cue juggling, direct control over 2 sample decks, loop recorder, and a ton more effects.
Now on the other hand, ITCH is a great just plug in and go controller for standard mixing and it just works, but there is little to no customization currently. Serato plans on allowing midi controllers to be used with their software but when is a different matter. As well ITCH has no midi mapping abilities on current controllers that ITCH has