Sager is great, I do not own one, but i have read many overwhelmingly positive reviews. I wish that were true for Lenovo. Clevo has good cooling so it won't overheat itself to death, the most common reason for a well treated (not dropped) device to die. Also it comes with their 2 year guaranty.
http://forum.notebookreview.com/threads/msi-vs-sager.782926/