im getting ready for college next year and i am needing an upgrade from my imac g4

to a MBP i used my G4 for video editing and high prefomance apps, as well as smaller ones like safari, ichat, keynote, and so on. should i wait for the merom?
i hear its 64 bit and aslo that 64 bit is slower on regular apps, i need some help with which i should get. i dont know much about the hardware and could use all the help i can get.
and second is getting the 7200 rpm worth the $180
Thank yall
