Just got the new keyboard hooked up, and it seems GLORIOUS. I was a little concerned about the noise level, but my wife assures me that within 3-4 days, she won't be bothered by the clicking anymore.
Downside: the backlight is TOO bright (as if this should be possible). Granted, I don't need the backlight to be on unless I need to blind an intruder, which this keyboard would be able to do on setting 2 (0 being off). I'm fairly confident that 3 would be visible from orbit, if I didn't have a roof.
TL;DR - I love this keyboard, and my wife can't look at my keyboard when the lights are on.