if you are looking for overall power, the 13" basically falls short on the GPU end (not much difference from the 320m). If you go for the 15", you need to avoid the low end with a crippled GPU (AMD 6400 series is almost as good as previous gen 330m), so, basically you need to shell out $2200 to get something that smokes the previous gen and that is without considering a hi res screen and SSD (both BTO). Having all that power with a 5400 rpm HD is pretty much useless. In other words, if you are a gamer (even occasional) you are looking at a seriously expensive machine, but it also seriously kicks a$$!