The Corsair memory is much more expensive than either of the two other brands (probably due to the fact that it has heat spreaders). Kingston has come down in price so it's at around $83. I was wondering if there is any major difference in any of these three brands. Right now I'm leaning towards the Kingston because I could get three sticks of 512 for the same price as a pair of Corsair's or Samsungs. I don't plan on overclocking my system and I need alot of RAM because I do a lot of work with audio and some video.