So my deal is, i have a Rev A Powerbook. 867 mhz. 256 ram, 60 gb hard drive, etc... i'm either going to buy a 512mb RAM, to max out this model at 640mb RAM. OR Wait, sell this powerbook and get either the new rev. Powerbook or the G5.. Whats the best suggestion in the case, max out the current powerbook that has zero problems and works great, or wait and get the newer one? Thanks.