The best replacement for mac air is mac pro.

The best alternatives to mac air are rated as following:
★★★★★  mac pro
★★★  pro
★★  imac
★★  macbook pro
★  macbook pro retina
★  mac mini
★  mac book
★  macbook
★  x1 carbon
★  ultrabook
★  acer s7
  mac pro 2013
  mac pro retina
  ultrabooks
  samsung series 9
  ipad 3

Your alternative for mac air is not listed? Suggest!
Speaking about mac air, one probably shouldn't forget about external monitor.

Other search terms related to mac air and their ratings are:
★★★★★ external monitor
You have in mind a companion for mac air and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mac air in all years. Click on graph for more.
mac air
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