I've used Seagate, Quantum (now Maxtor), Maxtor, and Western Digital. I had problems with Seagates back in 1998 when they bought and rebadged Conner drives, that were crap. I had whole lots that failed manufacturing testing. More recent Seagate drives in home systems have been quiet and reliable. I had very few problems with Quantum drives when I used them in manufacturing for a medical imaging vendor and had to support them, 1 or 2 failures within 2 years out of 110 drives. I had a few more Maxtors go up, 6 or 7 out of about 60 drives, but these machines were used as workstations, many 24/7 in hospitals. I've used a few Western Digital drives, about 5 and never had any problems with them. Right now Seagate gives you the 5 years warranty which I believe makes them the vendor of choice.