LCDs don't have a refresh rate in the same way that CRTs do as they don't need to keep redrawing the screen. Most all LCDs are set to a 60 Hz refresh rate in Windows, but it doesn't flicker like a CRT.
What LCDs do have that you need to watch for is the response rate of the screen. If it's too slow, you get ghosting or blurring in games and fast action movies. This isn't much of a problem with LCDs that have a response rate of 20ms or less, especially 16ms and below.
I haven't had any trouble with the viewing angle on my 19" LCD at all. The best way to check this out is to go to a store and have a look at some in person. The Samsung 193P LCD uses the same panel as the Dell 1905FP. Actually there are only a few manufacturers of the LCD panels themselves, and everyone else just puts them in their own case.
Here's a review of the LCD I have.
http://www.anandtech.com/displays/showdoc.aspx?i=2332
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