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Since you are traveling, I can see the need for a laptop, and recommend something from Asus or Lenovo. Follow the guide for PCs (you can go 16BG of RAM and be fine). Make sure you do not get one with AMD graphics. Most of the laptops have full HD displays now, which is not ideal as I think higher resolutions REALLY help, but I don't think there are many out there offering higher resolutions than that.
If you can find one that says it is IPS that will really help. Just as I stated in the article, I am not really pleased with the durability of PC laptops, they seem to fall apart much sooner than they should.