Another vote for the Sony. I've got a DRU-510A.

I chose it over the Teac (which was out at roughly the same time) because it comes with a natty silver-coloured drawer, which matches my ShuttleX box nicely.

But it burns CDs and DVDs really well -- never had a coaster (this is using Nero 6).

I can't rip CDs with it, but that appears to be a problem with the drivers for my nVidia chipset. Anyone else having problems ripping CDs with their Sony?