I am a Network Administrator and I also replace all my company's PC when they go out. I have never had a Seagate or a Maxtor drive fail. However, I have had several Western Digital drive go south on me but I have some Western Digital drives that are a few years old that have not had any problems. With today's hardware manufacturing techniques and quality control, it is rare to get bad drive.
Sure, some will fail but so could the next tire that you buy or the next TV or the next CD Player. Saying that one drive is better than another is like arguing about a Ford or Chevy. Some people are never going to agree. Look to the warranty, price and speed/size that best suits you.
-Target