Bigger displays at the same resolution won't look as sharp. The human eye can discern individual pixels at about 96 ppi (pixels per inch). At smaller ppi's, you can see the spaces between the pixels and picture looms grainy. TA normal PC viewing distances, the larger the resolution, smaller the display, the sharper the piture looks.
If you are looking at 1920 x 1080 on a screen that will be a large distance from your eyes (> 24") then the grainy effects diminish.
The Asus 1920 x 1200 screens are the best buy among TN panels that I have seen. Where color accuracy is important, you'll want a IPS or S-PVA and the entry point there is the Dell U2410 (new model) and 2408 WFP (older), both about $510-599 depending on your timing.
I've been hearing LCD's are mostly limited to 60Hz. On my CRT, 60Hz would tire my eyes. Do LCDs @60Hz have the same effect? I would appreciate the communities guidance.
You should not have any issues at 60Hz on an LCD like you do on the CRT. Unlike the CRT, which flashes the image to the screen and flicker off between updated frames, an LCD is solid state. It will not flicker black between frames, it just changes from one color directly to another with no flicker, so you won't experience the sore eye effect you get with the CRT at that refresh rate.