Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
IBM no longer produces their own drives, having sold that off years ago, following the IBM Deskstar drive failures (nicknamed "DeathStar" due to the failure rates). In the desktop space, the drives are Hitachis (SATA or IDE). In the enterprise space, they're Seagates (SATA, FC, or SAS).
In the desktop space, I'd go WD. In the enterprise space, you don't get a choice, and 1TB SATA drives are $600/ea after the 40% discount (which means they are normally $1k/list for a 1TB SATA drive...no, I'm not joking).
The two drives suggested are of the same areal density, although Hitachi has more sectors per track, which explains the higher sustained transfer performance on the Hitachi. The Hitachi's firmware handles game access patterns better, productivity patterns favor the WD. The Hitachi has significantly lower idle power consumption and slightly higher active power consumption.
You can't go wrong with either drive. I would favor the Hitachi for the lower idle power consumption/heat dissipation.