I don't own any, and if I did the only thing I would use them for are door stops. The drives are very slow by today's standards. From Storage Review:
"Though not nearly as objectionable as that of the Cheetah's, the drive emits a high-pitched whine that may be noticed in quieter computing environments. The Barracuda was quite loud when seeking from track-to-track, sharing with the Cheetah the "blender full of rocks" phenomenon. Just as the mechanical improvements close the gap between the two in performance, the loud actuator brings the two noise levels closer. The Barracuda 9LP is still quieter than the Cheetah 4LP, but not by much."
Loud and slow = don't bother.
"Though not nearly as objectionable as that of the Cheetah's, the drive emits a high-pitched whine that may be noticed in quieter computing environments. The Barracuda was quite loud when seeking from track-to-track, sharing with the Cheetah the "blender full of rocks" phenomenon. Just as the mechanical improvements close the gap between the two in performance, the loud actuator brings the two noise levels closer. The Barracuda 9LP is still quieter than the Cheetah 4LP, but not by much."
Loud and slow = don't bother.