No problem with lightness on my end.
As for LCD monitors, I use one. For the past year, my only computer's been a Dell XPS laptop (3.4Gz, 2GB, Radeon 9800 256MB). This has a 14" LCD display, which I run at 1920x1200x32, and have no FPS or refresh rate problems in any 3D game currently on the market, including AH2 with all the details on full. Gone are the days when LCD monitors refreshed too slowly for 3D action games.