dvd media

I just purchased the Sony DRX510ul DVD burner, and have been hearing all types of bad experiences with the media that people were using. I know that I can use Sony or Verbatum, but is there any type that is a little more cost efficient? I am planning to burn over 200 VHS tapes to DVD, so I don’t need to get cheap, just smart! Any suggestions would be greatly appreciated.
Thanks,
Dave