VideoHelp is a great resource for reviews of DVD writers. Since the 8x burners are pretty cheap, there's no reason to go with a 4x burner. Among 8x burners, the best rated dual burn writers, i.e., ±R/RW, would be TDK IndiDVD 880N, the NEC 2500A (under $90 at Newegg), and the Pioneer DVR-A07/107. I have two Pioneers, the 107 and the 106, and have never burned a coaster on either one. Great compatibility with media and DVD players.