A proper TV can be used to hook up with a PC as well.. a PC LED canot be properly used for that.. pc led are made for high density and accurate color reproduction..not high brightness needed for TV watching.. TV are made for higher frames and smoothness and less blocky tv reception. dany device will reduce tv quality a lot.. cz its not a proper quality tuner like Pinnacle or Asus etc.
in any case, Main difference between Viewsonic and Samsung is the color vs brightness
VS monitors have extremely high contrast and dominant red colors. their lower end are just average led..the VX series is the better monitor and should be preffered if you like Punchy color and high response time while playing games. if you like sharp colors and you donot get strain from it you will love viewsonic
Sams are high brightness with god color reproduction..their pic is very bright what movies and tv actually need, their colors are also very high but compared to VS they may look dull in a sideby side comparison only.
Also samsung has a lottery system of random models getting samsung made panel while others getting chinese made panels.. although it actually does not make much difference in qualityof picture, it is something to be aware of.