This is Apple bashing.
The Mac Air is a great PC. Its not expensive compared to equivalent ultrabook, just to a regular laptop. When I looked at the Macair i also looked at the Asus, Acer, and Toshiba equivalents,
The Asus and Acer were 10-15% cheaper, but were plasticky, had a lower screen quality AND resolution, had poor keyboards, similar socket limitations,and apparently benchmarked 20% slower than the indentically specced macair. Add the thunderbolt port advantage and their was no contest. The toshiba was good with full size hdmi and network port but the screen was very poor quality and dim, and the build was very poor. It was also $300 dollars more than the equiv Macair. I bought a macair and do not regret it one bit, I bought quality.
Dont get me wrong, I love and use PCs everyday at work and at home, and have had a PC at home for nearly 20yrs now, before the internet became popular. Im even typing this on my 6yr old pc laptop .connected to ext Hd screen and keyboard. I invested in a good laptop then, an NEC, really well built, with the best keyboard ive ever typed on, and i invested in a quality macair. Pay the extra 10% for build quality. Its why I dont have to buy a new laptop every year.
Baz the Man