The joke is that your DELL LCD may actually be a Viewsonic LCD since DELL doesn't actually make hardware they just put thier TM on it.
Now for some HARD facts! An LCD monitor with a ANALOG cord is not as good as an LCD monitor with a DVI cable. Analog will never be as responsive or precise as Digital (Video Interface). You should look at responce times the lower the better. The DPI is still an importand factor. And finaly the Resolution and Refresh rate. An awesome 19" monitor would be .25 or lower DPI, 1600x1200 at 75+ Hertz with a 25 or less responce time. If it is 60hertz then it's Interlaced or TV quality and no where near PC/Mac Standards. If your gamming you want to play at 72 and above; I reccomend at 85 hertz. If you want your monitor to last never use them at their max refresh, just like speakers you don't play them at their max volume or they don't last long same with monitors so if i says it can run at 120 but reccomends 100 then play it at a hundred, anytime you push your hardware to it's limits it will wear out much faster.