I recently just bought this burner (Pioneer DVR-K15) and was wondering does anyone else have problems burning DL media? I admit I have inexpensive media, but my previous OEM Lite-On never had any problems with it. I believe I have the newest firmware and have tried various methods and made numerous coasters. Other than getting different media does anyone have any suggestions? If not, can anyone recommend a slim combo drive from newegg.com that has been tried and true for DL?