Hi !!! Where would you buy your extra RAM and why would you choose any of the following: *Data Memory Systems, *Crucial RAM *OWC These are "the finalists" I found doing a search on mac rumors. They have more or less the same price (around $140 usd). However, I am very concerned about honesty, reliability, and product quality. If you think no third party can offer that, then I wouldn´t buy the extra RAM. If you know another RAM provider you may want to recommend, I would appreciate it. Thank you very much, igmolinav.