Well, I for one am a very happy camper with my 1620. It is the only burner I use, but I'm not into copying protected games. Had to give my sister my good cd burner, she needed it more than me, and was a little apprehensive over the 1620's cd burning abilities, but it has worked very well for me.
Dvd burning has been excellent of course. Better than my old NEC 1300a I think, though the NEC was dependable with good quality media. It just hated Ritek/Ricoh disks with a passion. I haven't been using anything but Japanese made TY, or Maxell's in the 1620, which may be part of the reason I've been pleased with its performance.