I did a lot of research and settled on a [link|http://www.yamaha.com/cgi-win/webcgi.exe/DsplyModel/?gHDR00007CRW4416S|Yamaha 4416S] (S = SCSI) and have been very pleased with it. My work also purchased one based on my research. That was a while ago, I'm pretty sure 4x4x16 is no longer considered the fastest in burner technology :-)

I use [link|http://www.rsj.de|RSJ] and have been very pleased with it. I don't think the freeware package existed when I got my burner, or maybe they weren't far enough along to be useful.