Well I'm getting sick of my superdrive spitting out perfectly good CDs and i could use the extra speed so I ordered a new SuperDrive from OWC. While I have it open I would like to add 512 MB of RAM and a new hard drive. What is the quietest hard drive I could get? Best RAM? Keep in mind I am on a fairly tight budget, I just want to squeeze another 6 months out of the machine. Any suggestions would be appreciated.