My old Sony laptop which is actually of great quality just wasn't portable enough (battery died after 6 months, it's a 15,4" screen, too heavy with 2.8kg). Of course it wasn't the fastest machine either now so I needed something new. I looked at all the laptops in the stores and found them so cheap: screen sucks, keyboard feels weird, the whole thing makes noises when you press somewhere too hard, things like that. So in order to get something of more quality I would have at least spend 1000 Euro on a Windows computer.
My sister was in need of a new laptop last year and she first wouldn't want a Mac, so she got a 900 Sony. (I always told her to get a MacBook but she didn't want to.) One day in use: it was making some weird noise and one key fell off. I always thought you could rely on Sony devices but that was a true bummer. So she returned it and got finally a MacBook Pro and she absolutely loves it.
This summer it was finally my turn to get a new laptop. I always thought I'd get a MacBook Pro as well but then when Apple introduced the new Air I was like: "Damn, this beautifully slim thing got now enough power and space!" So I ended up getting the MacBook Air and I know it was the best choice made.
The OS actually helps the User and I've had no troubles yet with the Air recognizing devices etc.
A few years ago I wouldn't have bought a Apple laptop cause I couldn't justify getting a laptop with comparable less power and storage and not sooo many software to run. But things definitely changed over the years and I'm happy with my purchase.