If you're buying new and we're talking the base 13" models here then you'd be paying an extra $200 for 2 more GB's or RAM and the aluminum body. For your purposes, I really don't think you'd need the extra RAM and if you wanted it you could probably upgrade it for less (someone correct me if I'm wrong). Anything other than the base 13" though and your only option new is a MBP. And if you go any bigger than 13" you'll be paying for a discrete graphics card and Core i5 that you may not use and some extra hard drive space you probably wouldn't need. I'd recommend sticking to the 13" myself unless you really need that stuff, especially since the prices start to climb fast once you move to the 15".