which fluid provides sharpest contrast?

[RLdesigns]

Which type of fluid is the best to provide the sharpest contrast?

[LCD_Designs]

There are three types of fluid (there are more than that, but three main ones)
TN = lowest cost, but also lowest contrast. Best one for cold temps

STN = good contrast and med price

FSTN = higher cost and sharpest contrast, great for medical products.