The most strenuous thing my laptop will go under: Netflix?
I'm not looking for a powerhouse that has the capabilities of performing like a "Ferrari". Battery life is crucial for me since I'm mobile a lot. Screen quality is very important also. How do you have a Ferrari that has the life of a Prius? Compromise!
I take design into heavy account because I'm just the kind of person that really cares about design. Once you've come to really appreciate the unique unibody design of the Macbook pro, other laptops just don't have the same feel of luxury. I take design into heavy account with other things also such as homes, cars, clothes, phones, and so forth.
Also... I'm going to be in Paris. Fashion has a different meaning there than here. Parisians take MUCH better care of themselves and what they wear and carry. It's like NYC or higher end areas of LA, like Beverly Hills or Laguna Beach, but on another level.