Whats the best plastic drain pipe material?

[mekanic]

I have a choice to make on pipe material. ABS or PVC?? for drain lines in a RV.
This "RV" had been a F-700 truck. It rides much better tnow that it has a air bag rear suspension but it is still a moving vehicle
that hits potholes every now and then.
I see that all of the OEM that build RVs and campers use ABS. is it more vibration resistant than PVC ?

[GENECARP]

Schedule 40 PVC, just support the runs correctly, easy to work with, very common in RV's.