I have a question to the knowlegable ones here... I have bought memory from crucial before on the recommendation of those here and have been very happy. I have experienced no problems with it, it works great. My question is about the memory advisor they use. I believe them when they say it will only recommend memory that will work. However when I use it they recommend memory that costs about $120 for a 512 stick for my PowerBook. When I do a search without specifying my system, however, I find the same spec stick for $62. Has anyone had any experience buying memory without using the memory advisor? Will the cheaper memory actually not work with my computer? Is it worth the chance (I don't know the return policy)?? What do you guys think?