Lenovo y50 4K or 2014 Macbook Pro?

I'm really stuck on which I should get. Here are the links-

Lenovo Y50: http://www.ebay.com/...EBIDX%3AIT

Macbook: http://www.ebay.com/...EBIDX%3AIT

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Which should I get and why? I prefer Apple, but it doesn't matter.