I'm here to voice out my comment.

All of my item that sold to buyers using Pos Laju.
Pos laju is reliable, fast as well. but sometimes will delay for 1 day.
But I once sent some plastic cups to buyer, and the buyer told me 1 of the plastic cup was broken. and i was like maybe some of their workers are careless. but that is the only rare case i met.

and i still uses pos laju for the convenience.

and their staffs are friendly too