Well the NEC-N1300 is not a good cd-audio or protected cd-rom copier.
However as DVD-recorder it's quite good. With most quality media.(including ritek G04,but there are some doubts about the quality of that ones). The NEC is still the best 4x DVD burner. It writes most media with the lowest error rate.
Bad point for some people is that it won't write bad media like princo officially. There is a hacked firmware which let you write allmost any disc out there , that supports higher ripping speeds of DVD video's and that is region free. However flashing it with that firmware will cost your waranty.
About the other drives.
Lite On seems to be quite problematic.
LG - Super copying device but slow dvd-r only burner (2x isn't fast) (writingquality is okay)
Optorite - Very nice allrounder. Not very good for protected media.
Has HD-burn.Writingquality and media support are quite good
(pro's against the NEC are that HD-burn and better support (service as media) Cons the error rate is higher)
Ricoh - DOn't know which model this is since I was lazy to search it up but there 2,4x DVD+R(W) drives are quite bad. The 4x DVD+R(W) drive is a good burner for +R media. But is a very poor cd-writer.