For IBM, i don't hear many complain for 100GXP and newer models.My pair of 80G IBM 100GXP series are working find after almost 2 year and 6 months even after more than 5 times moving, and more than 1 year of 24/7 FTP file sharing.
thanks a lot. how about the warranty of IBM harddisk? I am checking their prices
btw, I used to use 75GXP which is said to be broken easily while works fine in my machine, hehe. Still trust IBM.