Try Taiyo Yuden TYG01 or other well-recognized media. Most types of 2x and 4x media are of poor quality.
GSA-4040B is too old anyway. GSA-4163B is the latest burner from LG, or HLDS. Not much about Pioneer DVR-A09 known at this moment. GSA-4163B is fastest in recording time, best in writing quality, and has the most complete features. But if "compatibility" is your main concern, and I assume you want your drive to write to many types of cheap (regardless of quality) media, I have no recommendation of any one drive. Buy Pioneer DVR-A08, LG GSA-4163B, NEC ND-3520A, BenQ DW1620A Pro, and so on all at once and you will find at least one drive that works with the type of media you happen to have. No drive can write well to poor media. If you also want to do some PIE/PIF scanning, buy either Plextor, BenQ, or Lite-On drive.