I have had Westone 3 for 2 years and the cable is already broken. In fact there is a default at the exact point between the end of the cable and the section of the cable that is bigger before entering the earplug. That point is being flex all the point when you listen to your earphone (because it is the way it was made, going over your ear).
So true the cable itself is very resistant but the very end of it is not and given that you have no way to change only the cable, you are in the ****.
These earphone are made in China so no matter what you ask them to do if the product is not intensively tested then any default will appear. Of course with one year warranty... this clearly show that the product is not reliable in the long run.
Make your own choice but be aware of this potential issue.