LCD (Liquid Crystal iDsplay) monitor produces cisp and brighter image with high contrats ratio.
Multiple things to check before renting an lcd monitor like connectivity option (D-sub, DVI and HDMI). D-Sub (Analog) is most common option available in all LCD monitors. But DVI offers digital connectivity means bettr quality image. HDMI offers high definiition dislay with superb quality but this is costler.
Another thing is check for warranty many rental coimpany ofers on site warranty with spare LCD monitors in case of any failure. Also check for Dead pixels which look very odd on screren. Many mnoitors also comes with integrated speakers wich is value added.
Some LCD omnitors also offeres USB ports for connecting USB devices. LCD monitors consume very less power in coparison to CRT Mponitors. LCD monitors emits less Ellectromagnetic radiation and little easy on Eye.
Different LCD monityors offers different Aspect ratio most common is 4:3 and 5:4 but now days all latest LCD monitors are wide screen 16:10 which gives more working space then nrmal LCD monitors.
The main advantage of LCD Monitor is Spae. It takes very little space and easy to carry. It is also not buly and less in weight.