Crucial is in fact the maker of the sticks that Amazon bundles with, and that sounds like about the same pricing - ~$60 for 2 2GB sticks, free shipping with the computer.

And have you looked at the newest gen minis? they actually put a real graphics card in them, so I thin k they're supposed to handle graphics better than previous gens. That said, i'm not a huge photography person, and probably won't be putting photoshop on.