Philips (dell) 8631 and DVD -R

I’ve seen some posts stating that these drives didn’t like -r media. I’ve only had my system for a week, but I burned to Memorex 4x -r dvd’s in the philips drive, using NERO, burning at 4x, and they burned and played just fine. I don’t have my liteon hooked up yet to run tests, nor did I check the media code, but I will repost and run more tests with other -r’s and post later. I have the current dell firmware for the philips (BD10)