I've already bought a 16gb ram kit (currently have 4gb in my early 2011 stock macbook pro), but it hasn't arrived yet so I can't say how it will impact my performance but am expecting light and day since I normally have several gigs of page outs when working with aperture by itself and nothing but frustration when I throw photoshop cs5 into the mix. Does anybody else have experience running Aperture with more then 8gb or upgrading the memory coming form just 4gb? Also I've been thinking of getting a SSD but have heard they are overrated for real day to day pro app use, except for video. But to me right now the cost/space ratio is a bit prohibitive. Come tax time though I was thinking of getting a either a 240gb owc SSD or a 1tb internal old skool hard drive since I could rally use the space. I'm currently running aperture with ≈80gb local library space and about 500 gb on a external as referenced masters. My workflow is keep my current projects on my local drive and then when I get done move the masters to the external. Any thoughts on better organization? Also I shoot with a mix of 5dmk2 and xsi.