I've seen the Samsung one and to be honest...it wasn't that impressive.
I haven't seen the BenQ one, but it has full HD resolutions...which is a toss up on a small screen like that. Another plus about this one is that it has a HDMI input. Not necessarily needed, but it's nice to have the option. It's Senseye feature is pretty useless though (believe me, mines always off :lol
If I was buying right now... I'd probably go with the BenQ. But I would seriously do some review reading before buying any monitor. I'm not going to do your job for you now, I'm off to bed