Is the problem with WD units coming DOA or long-term reliability?

I really like the Seagate drives performance wise, but the Seagate drives seem to be a little noisier and vibrating more compared to the WD, esp their 7200 Momentus and that's something I can't deal with in a laptop. Then again, most of the owners complaining about that are using Mac's whereas this is going in a T60. Maybe I should order both and keep the one I like.