The two drives I recomend are the WD black 1 TB and the Samsung F3 1 TB.
Between the two slight edge for the samsung F3.
HOWEVER, seagate bought Samsungs OEM HDD. However, at least for the time being, the Drive is still made at the same plant by the same people.
Do not recommend The WD green drives.
Added: while the WD black may be a sata III drive, and the F3 a sata II drive - Do NOT buy they hype. Sata III does NOT boost sustained peformance. Only helps for the Burst speed.