This isn't a recommendation for a specific monitor, but it might be worth my mentioning that, for the mainly textual work which you envisage, you can IMHO greatly improve text clarity on even cheapo monitors by using the ClearType feature within WindowsXP (and presumably Vista but I'm not sure about earlier versions).
(The following does /not/ apply if your graphics card already provides proper 'antialiasing', which Windows doesn't).
By default, Windows uses 'Standard' text smoothing but, if you right-click anywhere in the desktop and select Properties, the Appearance tab and click on Effects, then change the 'Use the following method to smooth edges of screen fonts' sub-menu setting from Standard to ClearType and click on OK, that should significantly improve the text display.
If desired, you can then fine-tune it by clicking on Start - Control Panel - ClearType Tuning and run the self-explanatory tuning wizard.
You /may/ find on a cheapo monitor that ClearType causes black text to have red and/or blue edges, but that shouldn't detract from readability.
These changes affect only what you see on the monitor and /not/ what will be printed. HTH.