But it looks like you want a gamer laptop. So it should add a few pounds.
I need something that I can carry (travel with) and use on my lap when I need to. I am deciding at this point between an Asus N80 (14.1") and F50sv with similar specs -- P8600/4GB RAM/320GB HD/Nvidia GPU (I'm told the 9650 and GT120 are same/similar) and same price ($1000). Aside from the obvious screen real estate difference, the 14" N80 weighs about 5.7LBs. while the F50 weighs 6.3Lbs. My question is, for the relatively limited amount of portability I need, is the extra half pound or so going to become bothersome?