I've been searching for a while and I think I have narrowed it down to two laptops, the Asus N550JV-DB71 and Lenovo Y510p.

I really can't decide between the two. I will be replacing the HDD with a 256GB Samsung 840 Pro SSD.

They both come with a 750m GPU, but the Asus's GPU is DDR3 while the Lenovo's is GDDR5. How big of a difference is this?

At my current configurations the Asus is $944 while the Lenovo is $969 (non-sli).

I absolutely need to have the laptop by Aug 15. I will be ordering the Asus from GenTechPC and the Lenovo from their website.

Which laptop has better build quality/screen? How about fan noise and heat? Better trackpad/keyboard?

What is your budget?