The rubber sleeve for the power supply and grommets on the hard drive trays should help to quell any vibration produced by these devices. I didn't run into any issues installing either; all the mounting holes lined up correctly and there are certainly plenty of screws provided.
The power supply cables I found were too short; one did not reach at all and the other only barely. It is quite a stretch for a unit mounted at the very bottom of the case to get to the top corner where many motherboards place the auxiliary +12v connector.
The power LED on the Whisper is very bright compared to the other lighting on the door and intake fan.
Let's wrap up with some final thoughts and conclusion.