Over the last 6 years (roughly) I have dealt with DX a couple of times. Here's what to expect:
Expect that you don't need to be in on the delivery date because you will be told that there was a problem with delivery and you must rebook.
In fact you may even be told they left a card, but you will not find it.
Expect that they will not find your address. I once discovered my delivery driver was driving up and down the street slapping his horn, and had been for some time, not bothering to look for the address.
Expect your packaging to be damaged.
Expect their call centre to have their hands tied, in that there's nothing they can do for you, even if it's the third day you have waited in for your DX chariot to arrive only to be told once again that your delivery is not possible today.
Expect to see the DX van in your street nearby if you use tracking. Oh yes, they "will" be nearby. Do not expect a knock on the door. Do expect to track them five minutes later to find them a long way away.
I cannot believe that DX are not only still operating, but that they have not changed in the years they have been around.
No one should have a sinking feeling of dread when they find out what courier is delivering their item. No one. Not about the courier. But once in a blue moon I see DX come up in an email or text, and I know already I won't be seeing my item for some time.