Hard Disk Recommendations

I've been quite happy with my purchases of Seagate's 7200.11 drives. The 640GB and 750GB are quite cheap and the 1.5TB makes a great external drive. I've replaced my 2 500GB external drives with a 1.5TB drive so that I can have 1 drive for the sake of simplicity. The 640GB drive is a 2 platter design and I suspect that the 750GB is always a 3 platter despite Seagate having the tech for 375GB platters for the 4 platter 1.5TB. Given my experience with drives with 1 year warranties failing within 2 years I'm pleased that Seagate offers a 5 year warranty on all of these drives. The only other drive I will be purchasing in the near future is the Western Digital RE3 for servers. The multiuser performance of the RE3 is somewhat above the 7200.11. However, the 7200.11 has performed quite well in my tests and I'm also impressed by it's low noise and low temperature.