"But with too few ports, a sealed battery that you can't replace on your own and no built-in CD/DVD drive, Air is not the ideal laptop for everyone," Baid says. "And while battery power is impressive, it pooped out in my tests well short of the best-case, five-hour scenario Apple has been touting.

Meanwhile, Walt Mossberg, tech columnist for The Wall Street Journal says the MacBook Air is beautiful, but is missing features that will disappoint some frequent travelers. He says the laptop is "beautiful," "amazingly thin" and has innovative features such as athe touchpad.

"But there's a price for this laptop's daring design: Apple had to give up some features road warriors consider standard in a subnotebook, and certain of these omissions are radical," Mossberg says. "Chief among them is the lack of a removable battery. So, while the MacBook Air will be a perfect choice for some travelers, I can't recommend it for all. It really depends on your style of working on the road and what features you value most."

He also laments the lack of an Ethernet jack, the single USB port and a dedicated slot for most common types of external cellphone modems. "If you value thinness, and a large screen and keyboard in a subnotebook, and don't watch DVDs on planes or require spare batteries, the MacBook Air might be just the ticket," Mossberg says. "But if you rely on spare batteries, expect the usual array of ports, or like to play DVDs on planes, this isn't the computer to buy."

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