Every Acer laptop I have touched has sucked in one way or another; therefore by association I would not get an Acer LCD display. But who knows, they might actually make good displays and put all the suck on their laptops.
LG, no experiences with them, but I hear they make some reasonably good stuff.
I myself have a Samsung 22" widescreen display (SyncMaster 226
BW), and so far so good (althoug the model apparently has been sold in many versions with some differences in panel quality/colour balance, but as the same product... so you might want to dig around a little and see if you find any reasonably reliable dirt from reviews). Also, I've had good experiences with a 17" Hyundai ImageQuest L72D display, and that's my experience about LCD displays.
EDIT: also, I would avoid any glossy panels because of all the reflection issues, but that's a matter of personal taste as well. Some like it shiny. I prefer seeing what I'm supposed to.
