in my opinion i would say do not get either one.....use your money and purchase some good quality DVD+R media.....if you really want a good DVD-R burner then get a Pioneer.....the LITEON drives tend to like DVD+R media so you'll be wasting your time with burning DVD-R media.....NEC drive is one brand I don't own so I can't give you any experience with them.....but from what i have read about them they lack firmware support from NEC thus there are firmware programmers that create hacked firmware for the drives.....i bought my BENQ 1620 because it supported BITSETTING out of the box with no need for any hacked firmware.....it burns both types of media well for me.

i've only used MAXELL 8x DVD-R, TY 4x DVD-R , TDK 8x DVD-R media with my BENQ 1620 drive which burned great with no problems or any issues in playback....i have burned prodisc DVD-R in my pioneer 107 with no problems.

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PLEXTOR 708A DVDRW
PIONEER 107D DVDRW
LITEON 811 DVDRW
BENQ 1620 DVDRW (2)
TOSHIBA (2)1612 DVD-ROM
PLEXTOR 48X24X48 CDRW
PENT 4 HT 3.00C, 800 FSB, PENT 4 2.40 533 FSB
ASUS MOBO's P4P800SE (2)
1GB CRUCIAL PC3200 MEMORY, 1GB CRUCIAL PC2700
WESTERN DIGITAL 36GB RAPTOR HARD DRIVE
MAXTOR 200 GB HARD DRIVE
MAXTOR (2)250 GB HARD DRIVEs
MAXTOR 200 GB SATA HARD DRIVE
MAXTOR (2)120 GB HARD DRIVEs
MAXTOR 60 GB HARD DRIVE
ANTEC TRUE POWER 480 WATT POWER SUPPLY
ANTEC TRUE POWER 430 WATT POWER SUPPLY
ANTEC SLK2650 CASE, ANTEC SLK2600AMB CASE
CANOPUS ADVC-100 ANALOG TO DIGITAL CONVERTER
MAXTOR ATA -133 PCI CONTROLLER CARDS