Silence is not Easy

My current Q6600 Rig is still not silent. The loudest device right now is the Western Digital 250gig KS.
I probally need to change the case to the Antec Solo, price at this time $80.32. This case will be silenced using Nexus Damptec Noise Absortion material, 3 sheets 40x50CM $47.80 + $20.87 for the 5.25 and 3.25 drive bays.
Overall total $80.32+$47.80+$20.87=$148.90.
I could possibly also replace my hard drive for a Samsung hard drive, but cannot find anywhere now.
OOPS!! Lets now forget the power supply, Seasonic S12II 380 watts $58.32, so new total $148.90+$58.32=$207.22.
Thats all for now, lets hope its going to be silent, but since money doesnt grow on trees, silence will have to wait.
Thank you