Some Pros for LCD's are:

-Brightness

-Emissions 

-Geometric Distortion 

-Power Consumption 

-Physical Aspects 

-Screen Shape 

-Sharpness  

Some Cons for LCD's are:

-Aspect Ratio

-Washed out blacks 

-Contrast

-Color & Gray Scale Accuracy

-Cost

-Motion Artifacts 

-Resolution

-Viewing Angle 

-Thick Panel

Some Pros for OLED are: 

-thinner, lighter, & More flexible

-Brighter than LCD

-use less power

-easy to produce

-the first apple watch was OLED

-has a wide viewing angle 

-Perfect Black Levels 

Some Cons for OLED are:

-Short Life Span

-High production cost 

-easily damaged by water