Have a look at the link below and look at the individual reviews of each on the same site.
http://www.digitalversus.com/duels.php?ty=6&ma1=36&mo1=458&p1=4495&ma2=41&ph=1
From that comparison the Samsung seems to have slightly lower input lag which is what matters to you as a gamer. However if you look in the reviews the Viewsonic seems a tiny bit more responsive.
I'd say just go for which one you prefer the looks of or can find cheaper.
Anything by digital versus should burn

I'd much rather hear from someone who's a gamer who's tried both than these clowns

Rant over!
