I really don't have a favorite, but I do have a worst. SEAGATE!!!
Right now I am using dual IBMs in my RAID system, WD in both of my Tivos and a Hitachi in my laptop. I use to run a little side project building computers 200-300 a year and I have had problems with every HDD out there.
My top five worst:
1. Conner (bought my Seagate)
4. Quantum Fireball (IDE only, UW-SCSI was the best)
Soyo Dragon Ultra Platinum Edition powered by a P4 3.06GHz w/HT @ 533FSB
ATI Radeon X800Pro 256DDR <---Yeah!!! I finally got it!!!
1024MB PC3200, Creative Audigy LS, 2 x 40GB = 80GB RAID 0
Windows XP Pro, DOOM 3, CS, UT2004, BF1942 RtoR, CNC Generals
Finished Half-Life 2!!!!!!!!!!