DX has been discontinued (post 2012 I think)
DLX still continues although after 2012 it had an automatic model as well
So , the major differences between DX and DLX were;
DX : No ABS, No Alloys, Different color handles, No fog lights
DLX (Manual) : ABS, Alloys, Body color handles, Fog lights
DLX (Auto) : ABS, Alloys, Body color handles, Fog lights + Auto transmission
And to your second question of whether it kisses the speed breakers and that whether it is comfortable or not?
Yes, it is a very comfortable car and it has much much better ground clearance compared to Vitz or Passo. In fact it is incomparable when it comes to ground clearance in its category of hatchback cars. Hope that answers your question