After researching monitors considerably, more specifically LCD Flatpanel Displays, the best namebrand product without a doubt is the Samsung line. Their variable contrast ratio far exceeds any generation LCD on the market. Their pricing however is rather high, I ended up purchasing an Olevia 37" LCD which has DLP quality (very good) contrast.
As you did not specify best buy, but best product I have to say samsung. Not even the Aquos series by Sharp even compares.
As for Viewsonic; their monitors are decent... but their assembly controls seem to be poor. I've had two dead monitors of theirs in the last year and a half.
Dell displays: good quality, but you get what you pay for, they sell cheap quality ones too.