Best Media for Benq DW-800A

If anyone out there has this drive, what brand of media do you find works best with it? I have been using Memorex +R 4x and I am now experiencing problems burning. I have burnt dvds with them after I bought the drive but I am now having many issues. I recently used the DVD RW that came with the drive and burnt 2 movies with it fine. Can a drive have issues with media that has worked previously in it?
Any help is appreciated.

My results, mind you not trying many types of media:

Ritek RiData DVD+R 4x (RICOHJPN01 I think it is), excellent
Mitsubishi Chemical Company DVD+R 8x (often sold as Verbatim) MCC03, excellent plus
Taiyo Yuden DVD+R 8x (I forget the code), exceptional

I have a lot of trouble with CMC MAG F01 but CMC MAG E01 burns quite well, mind you only at 2.4x.

I almost agree with PhotoJim.

Unfortunately, the last Ricohs (TDK and PLATINUM) i have bough are really bad.

So, i would go for the Verbatim (MCC 003) and Taiyo Yuden (YUDEN000 T02). I never had problems with CMC MAG F01 with my Benq.