I'm planning on maxing out my iMac 2.4 20inch with 4GB of RAM. I've heard one of the best places to go to get RAM is OWC, so i've decided on that. My question is, on the site, there are three different RAMs, all of them are 2GB x 2, but one is $129.99, one is $139.99, and the last is $179.99. It would seem logical that the latter would be better, but i'm not sure with this. I've never heard of any of the three companies. My choice would be to go with the first one, by Micron, but I want to get some feedback by people who have bought these. I really would need to get one of the first two because of price, but if they're not good, then I won't. What do you guys think?