I've done enough looking around, and I've built a few PCs to be knowledgeable enough to finally lay down a few bucks for some memory. I've used Corsair in the past, and I'm sticking with them. They were always slightly higher in the PC whelm, but it was solid stuff, and worked great, it was also referenced by friends who built their comps as well. So here is the site (and the memory many others beside me have looked at): http://corsair.com/products/mac_memory.aspx This will be for my MacBook Pro. Its the only 4gb offering from corsair for the MBP: model #: VSA4GSDSKIT667C4 The newegg site you can buy from (link from the corsair page) has the model # correct. I'd rather buy from Amazon. their link redirects. ...and when i do a search for that same model number it brings up a match that is missing an "S" between the G and D granted its the only 4gb laptop memory corsair has, its odd that the initial link from corsair for amazon redirects. I don't want to say I'm paranoid, but even on corsairs's page their model numbers are pretty close, changing just one number or letter for a completely different item. Thanks.