I'm considering making a move to a 22", either a Samsung or LG. I don't know why I'm waiting.
Go for the Samsung 24". You can get 4 tables on it without overlapping as it does 1920 x 1200. Cost in Canada is just under $500, should be less in US. I have an Acer 26" with same resolution and it is great for 4 tables.
Jojo, I would not hesitate to get one. It is well worth it. I would go with a widescreen because it is easier to get 6 tables onto it I believe. May want to double check though. I actually use my laptop screen to display the lobby to manage waiting lists, spot juicy games, etc.