Aftermarket O.E brands would be Pilkington, PPG, and LOF. More common than O.E. But from what I last remember when I used to work in the car glass industry. 300zx glass is expensive whether it's O.E or Aftermarket O.E. Many of the times they're the same price.
"The key to immortality is first living a life worth remembering." -Brandon Lee 1965-93