What are the contrast ratios on them both? The higher the better. The first one has a bigger screen would be nice, but its entirly possible is has a extrramly low contrast ratio, although it could be very high too, dont know.
From the info you've given us it win's in all three cases, Size, Brand and Speed.
If given the choice take a viewsonic. The only downside is the price.
Well, Viewsonic makes amongst the best flat panels on the market today. Yusmart is a no name brand that you would probably find in Kmart. There is no contest between the two.