+1 for the 460. As said, if you can swing the 1gb, go for it.
The Corsair psu is a good selection. Modular really makes a difference for cable management, aesthetics, air flow,...
As for Ram, I prefer Mushkin. Any of the lifetime warranty memory is good. Patriot, G Skills and the Corsair fall into that category.
Case selection is subjective. Go with what you like and is practical for you.
Component selection shows you've taken time to read some reviews and done some research. Good luck with your build and enjoy the new system!
