Lenovo ideapad z500 or dell inspiron 15r turbo ?

I went to a local retailer and checked lenovo ideapad z500
Specs
i5 3rd gen 3.5 - 3.10
gpu: nvidia 645m better than inspiron
hdd; 1tb
ram: 8gb
Cost only 50000. I am coming just now from lenovo store.


The specs are better than inspiron 15r turbo.
But i am concerned about reliability of lenovo. I have never used a lenovo before. + the throttling issue in lenovo the z580 has throttling issue *www.notebookcheck.net/Review-Lenovo-IdeaPad-Z580-Notebook.81415.0.html the Y580 also heats up
Should i buy lenovo?