Summary: I use the Apple Cinema 30-inch display at work along with two 24" NEC Multisync 2490WUXi displays. Our systems are beefy HP workstations running Nvidia Quadro FX4800 cards. We use our Apple monitors as essentially a 3rd display for extended desktop space.
Summary: I've owned the Apple Cinema 30" display for several years now and I kept Applecare on it until the warranty ran out. The display is beautiful and provides a ton of real estate on a single display. However this display did not age well.
Summary: LCD monitors inherently can be manufactured such that they end up with a few dead/bad pixels. This shows up as a colored dot on the monitor when certain colors are displayed. Apple needs to do the right thing and take a stand on quality control.