I'm going to order a MB for my wife and a MBP for myself. I was going to upgrade mine to 1GB through Apple, but then I decided I would order 2 3rd party 1GB sticks for mine and move my stock 512MB over to my wife's to bump her up to 768MB. I know Apple says it is better to have matched pairs, but I've read some other people have unmatched upgrades that have seen definite improvement. So 2 questions: Do you think this is a good idea, and in doing this will I be guaranteeing myself an older built machine that is more likely to have the problems that have been discussed on this board as well as every other board dedicated to the MBs/MBPs?