I've always been told, the more RAM, the better. I wonder though, if I consistently have 55mb of free RAM when running all the programs I need, would buying more RAM do anything at all? I have a 1 Ghz TiBook and a single module of 512mb ram. Although I'd like to think spending $140 on memory would make my powerbook faster, if I have free ram at all times, wouldn't the extra 512mb I'd buy be dead weight? Also, I don't want to turn this thread into another "which notebook ram to buy" debate, but is crucial ram any better than other well-established brands of memory?