http://www.cnet.com/news/get-an-asus-zenbook-ux305-for-599-shipped/ shows a deal gone by but this model is still a bargain at 699.
Hybrid drives did help but not enough that I will talk them up. Let's ignore that item.
To me this the first 2 are great student laptops.
Let's dive into battery times. http://www.notebookcheck.net/Dell-XPS-13-Early-2015-Notebook-Review.139382.0.html and skip down to battery times. As usual the battery time varies from 2 to 21 hours (TEN TIMES) depending on use.
I'm sure you knew that.

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