There is no best make of hard drive, it's that simple.
It all depends on the factory where it was made and which batch it came from.
People will often spout on about which hard drive is best based purely on their own experiences.
If that were the case I would roundly diss Western Digital as I've had loads of their HDD's crap out on me. But I'm still using 2 of their Raptor drives.
I prefer Samsung myself, purely cos they look good and they're quiet. And no problems yet.
As for Hitachi, yes they bought out the IBM disk making section and relabelled the drives Hitachi. Yes, IBM went through a very bad period where thousands of their drives broke down, I had 2 x 20Gb drives myself go wrong from IBM at that time. But we're talking 1999 - 2001 which is what? 6 to 7 years ago.
At that time the drives were marketed as 'Deskstar' drives but soon earned the nickname 'Deathstar'.
Hitachi, in my opinion, now make good Hard Drives, certainly as good as any other manufacturer.
See my signature and you'll note that my storage disk is an Hitachi 250Gb SATA drive, it's been worked hard for about 6 months now.
I won't recommend any make of drive over another but I would say go ahead and buy the Hitachi if you like the look of it.