I would always pick Causeway Link Express barely because this bus do not stop at Yong Peng for makan for 1 hour which is a farkin waste of time.

I mean who on hell would like to makan for 1 hour or 45 mins at 11pm at the yucky Yong Peng Bus Terminal for instance?

So far, I see only Causeway bus stops only at one of the rest room for 15 mins toilet and then continue its journey.

KL to SG takes 4.5 hrs to 5 hours only due to this fact including immigration clearance at non-peak hours.