After purchasing my 27" i7 a few weeks ago now, I decided to go ahead and upgrade the RAM from the standard 4 gig to 12 by adding 2 4 gig parts. I have used Crucial before, and assumed I would again, but after doing a bit of shopping, I noticed that the OWC ram was cheaper, and OWC got good reviews here at MacRumors. Their site made it easy to select the right parts, and before I knew it, it was off to checkout where as an instant gratification kind of guy, I got another nice surprise seeing that even though shipping was free, I could have it 2 day for 7 dollars and overnighted for 13! The need for instant gratification won out and I chose the overnight option, bringing my total purchase to, still, well under $400 dollars. The RAM arrived as expected today, and after checking the installation procedure online, it took all of about 8 minutes to do the install. After powering down and unplugging the power, it took nothing more than a small phillips head screwdriver (normal household small, not computer part small) to unscrew the three screws holding in the plate that covers the ram slots. After removing the plate (and the screws staying attached to the plate so you don't lose them), you move the two plastic tabs (to help remove ram in the future) out of the way, pop in the parts, re-tuck the tabs in, screw the cover back on, and plug and power her up again. It really was that easy. Standard 4 gig is now a nice 12, and it just "feels" faster, LOL.