Hmmm... there is no additional features as such...but u get additional softwares like nero showtime/ powerDVD.
My opinion:
1.
Benq 16X burner : Benq 1600/1620 ->Same drive (1600), can be flashed into the 1620 (done by the company themselves) , officially using a Benq sanctioned firmware.Superb reviews out at CDRLabs and CDFreaks, indicate this is "THE" drive to own.
Cost: rs. 4500
2.
Sony 720-b
A very good drive, only the second best after benQ
Cost: rs. 4.8k
3.
LG-4120B and 4160B
The good thing about LD drives is the can write almost all formats, including DVD- RAM
Cost: 5K
Cost of other drives:
Samsung 16X :Rs.5K
Liteon 16X :Rs.5.5k
Pioneer 16X :Rs.5,000
Plextor PX-716 A - 6.5K
NEC gives good writing speeds but unfortunetly not marketed in India.