What's the best place to buy RAM for my MacBook Pro. Apple's RAM is rediculously expensive. I'm nervous about getting non-Apple RAM though, because I've heard things about bad RAM, and all that stuff. Also, I'm thinking of getting a 1 GB stick, which whould bring me up to around 1.5 GB. Whould that be enough? I cant really afford 2 1 GB sticks, but I will buy if I have to.