i am using asus a8jn, bought it two years ago, and very impressed with the service provided by Asus Service Center, so i will stick to this brand... Feel like getting a new laptop for myself, budget range will be from 4000 to 5000++, is captivated by N51VF, but i wonder if it is right to go for this model? its processor is equipped with 1066 FSB, but it is embedded with DDR2 800 MHZ Ram．and the another issue regarding to processor, not sure whether PXXXX and TXXXX with same core speed got significant different in terms of speed?