I don't think Aperture was coded with 20+ MP RAW images in mind... my top of the line Macbook Pro is craaaawling... the ball spins for a good 5 seconds on every image... I'm sure this is a software issue because the same files in Photoshop scream on this computer...Apple...if you are listening, pleeeeease announce something on Aperture 3 soon... I don't think I can handle switching to the awful UI of Lightroom, I have tried...