I agree with not listening to anything the drooling impeciles at GC tell you, about anything.
5400 will work just fine, you might not have as high as a track count, but it will work. If you do get one, do not replace the old one, use both. set up the new drive to store your audio files and the old drive for your apps and OS. That saves the audio drive from having to stop streaming audio to do work for the application programs.