C-PVC Piping for water lines in Phoenix? Replace?

[Hector De Santiago]

Have a property I'm flipping in Phoenix, the previous tenants took all the copper piping and replaced them with C-PVC piping. It was leaking from the water heater connection and destroyed a lot of the dry wall with water damage. Being that the area with C-PVC is exposed should I repair the leak and close it back up or replace the C-PVC with an alternative like PEX of copper? Property is in the low end range in Phoenix.