I had been using a 30" HP LP3065 for a few years.  When it started intermittently failing for short periods I started researching my options.  I'm a software developer, but also do some amateur photography.  I have two PC's and two Mac Mini's.  My previous monitor had three dual link DVI inputs.  Trying to find a monitor to support inputs from three or four computers at full resolution was difficult, so I ultimately opted to purchase an IOGEAR 4-Port Dual-Link DVI KVMP Pro switch to switch the video (and keyboard and mouse) externally.  This allowed me to get the most cost effective panel for my needs without paying for all the extra internal switching circuitry.  This Yamakasi fit the bill perfectly.  Now, not only is the switching external, but the monitor power supply is external as well, so if anything fails I can replace the individual piece without shelling out over $1,000 for a whole the monitor.