Radion Barakov :
Western Digital make the best HDD's so... that's why.
Technically, it's like every other 7200 RPM 64 MB SATA 6 HDD. And WD isn't the #1 in quality. Hitachi is.
But everyone has their personal preference. I've had 3 WD's fail in 2 different PCs. Yet the 4 Seagate's I have are still running strong 5+ years. And Seagate's have higher failure rates than Hitachi and WD. Can I explain it? Nope. Luck I guess. Just be careful putting your opinion in posts.