i am a confirmed AMD fanboy . i have 3 systems up and running all the time . build all amd systems for my friends .
guess what i have a centrino laptop .
I have the gateway M505XL it has the following specs
pentium m 1.5
512 megs of ram
radeon 9600 video
40 gig hdd
I have no first hand experience with a athlon 64 laptop so i cant really comment on them . what i can do is say i think it would be pretty darn hard to top this gateway .
I get 4.5 hours of battery life just surfing the net and not pushing it . the only game i have really played on it is Need For Speed Underground . its a fairly demanding game as far as system specs go . i can run it for 2.5 hours non stop and still have battery life left .
i dont know what the amd will do as far as batter life goes but i would be its not as good as the centrino .
as far as cost goes it cost me around 2k but i think it was worth every penny of it.