In other words, how is the current noise level? I've had a couple of 360s in the past. They worked fine and everything but I just hated the noise. I didn't mind the system noise so much but when a disc was inserted I felt like putting on headphones at night since I couldn't crank the TV volume all the way without waking up everyone. I wasn't able to hear anything in the game. Only during the day it'd be fine but I never play games at those hours.
Does installing games help?