I've had a 30GB Maxtor Diamond Max 7200 5toh....er something like that model #, and it's been kickn' for over 2 years now. Put several of the 40-60GB Diamond max drives in computers over the last 2 years without a problem.
1 Drive has failed out of about 15 drives or so, and Maxtor RMA was good to me, sent back a 40GB drive when I sent a 30GB in. Little slow on the RMA, about 2 weeks, but still a good deal considering the extra 10GB.