Hey guys, I've only owned PC's in the past and recently bought the iphone 4 which is my favorite piece of technology I've ever had. My wife and I want to sell our desktop and dell laptop and simplify our office space and just use a macbook pro. We will be surfing daily, downloading lots of media, my wife will be editing photo's with lightroom and Photoshop and watching the occasional movie. I'm thinking a 15" would suffice, but might end up with the 17" just for the extra screen. Portability isn't a huge concern as it will mostly just stay on the desk at home but we'd like to take it from room to room a lot and occasionally take it out. Which MBP would you recommend based on the these needs?