well let's see, i am not a grandmaster guru like many of these fine folks, but i'm tailing off on the resarch portion of my project, and getting ready to place the grand order for all my parts.
what i can offer is this: as far as keyboard encoders go,
I now they are very expensive, but they are relitively easy to install, they eliminate ghosting completely, you can get them with or without a trackball interface, and they function as a highpass filter so you can still have a normal keyboard plugged into the encoder as well as your control panel, and they have 72 inputs if you go with the he72. plus the added
bonus of not having to mess with the messy and to me confusing "keyboard hack", me being lazy this is the way i'm going, i also intend on using a usb encoder as well.
as far as monitors go... well all my reserch pretty much came from here, my original plan was to use a 27" television, it was cheap (relatively) with s-video seemed to get decent images, and was fairly simple to hook up to a pc. then i perused the monitor forum here, saw the pix of the wells garner 27" d9200 sitting beside s-video...all i can say is i'm gonna pay the extra bucks, but i'm working with a fairly large budget of about $3000 dollars. as far as danger goes, yes installing monitors is very dangerous, but you can do it i spent 10 years in the navy as a sonar tech, we replace fairly large crts quite a bit, and now i work for intel, so have plenty of friends with experience that i can call to help with the installation of a large 85lb tube. from what i've read almost everywhere normal computer svga monitors have to good of resolution for older game to look good plus they are interlaced. i say go to the monitor forum and look there...for me the choice was obvious.
hope this helps a little, like i said i'm not the most familiar on this stuff yet, but have been trying to do my homework, so if i'm wrong anywhere, i'm sure you guys could point it out.
cheers