Gallery: MacBook vs. Ultrabooks
Thin, thinner and very, very thin... 'Ultrabooks' a category of laptops all their own.
MacBook Air — from $999 (Apple website)
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Asus Zenbook, starts at $999.
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Acer Aspire S3 – starts at $899
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Toshiba Z830 – starts at $1,149 on Toshiba.com
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