I was planning on purchasing a 60" x 30" Kohler Archer tub (K1946-LA-O). There are two options for the slotted overflow bath drain, brass (K7271) or PVC (K7272). Which drain do you prefer and why? The owner of the remodel business I am going to use said he prefers PVC, but his construction manager said they can use whichever one I want. Thanks for your help.