Okay... This is kind of important:
The new Macbook Pro's use Apple's proprietary pentalobe screw.
That statement probably didn't rock your world, but it's one reason why I'm not buying a macbook pro. This screw has one purpose and one purpose only: to keep you out of your own laptop. The Air's have been using them for a while. You may think that you can get a driver when you need one, but it's not as easy as you think. Apple will not lend or sell you a pentalobe driver. They're probably actively trying to sue anyone who will. If you can get one, it will most likely be from an online source and take weeks to arrive.
Why is this bad?
Most users, myself included, don't plan for failure. Life is life. Stuff breaks. I can fix a lot of it. I've owned relatively few laptops over the years because I nurse them along into extreme obsolescence. I've spilled coffee on my laptops many times. If you power-down and remove the battery immediately and do some careful disassembly/cleaning you can rescue almost any laptop from a coffee spill no matter how much sugar and cream you take in your joe. Provided you have the tools to take it apart that is!
My air lasted exactly one spill. I couldn't remove the battery. I couldn't take it apart. Apple refused to do either for me. They made me wait 4 hours for an appointment so they could tell me it's now off warranty and offer to repair it for, I kid you not, more than I paid to buy the air new!
The end result is that my nice 2011 machine aluminum unibody air had a total life-time of less than a year. These devices may feel like they're built to last, but a device built to last is serviceable. The air's and now the pro's are built to be disposable.