I have a Macbook pro running bootcamp with Kaspersky & Macdrive on the pc side and Paragon ntfs on the Mac side. I share a lot of data on memory sticks while running both Operating Systems and want an antivirus for the Mac side that will also pick up PC viruses. I don't want to replace Kaspersky on the Windows side, so should I buy Avast for Mac for the Mac side or Avast for Mac & PC?