Asus X550LC vs Lenovo Z510 vs HP envy 15j-111TX? Which one is best for everyday use and short time gaming?

I'm looking for i7(4th),8 gb ram,1TB HDD…
But i'm confused of choosing which one is better… Jbl or sonicmaster or beats audio?
…4500U or 4700MQ or 4700HQ?

PS: i have a chance to buy in malaysia and use in India. Does it reduce the cost if i do so?