Hi Steve, I'd love an i7 Mac!
I'm running an i5, 16Gb of RAM and an SSD cash drive with two 2Gb, 7200 Spin speed Hardisks and with my D800E files, it just churned, actually being unable to complete a Develop process in Lightroom 4 before freezing solid!
It handled my 5D MKII Files fine though but not the SONY A77 ones, here it hit the wall, so despite my flippancy earlier it is a consideration for upgraders, I run a lean machine too for speed. I am not currently in a position where I could upgrade my desktop for a higher Mp count body and I think it's something for new users to watch out for in a potential upgrade to a D3200/5200, to ensure a happy experience...


Cheers jules...
tri-elmar-fudd
www.exaggeratedperspectives.co.uk