which laptop should I buy?

what Im looking for is quality and a reliable laptop that doesn't brake down after 2 years,

like my other commercial laptops did,

this is very important to me,

I understand most of the business laptops are not built for gaming,

I do a lot of work on the computer but I also would like to play games sometime,

at the same time I want high quality and something that will last many years,

I have been lurking around the net and finally found 2 different brands that interest me,

they are ThinkPad T420 / T420s and Asus G53SX

the Thinkpads are great machines but I don't know how good they are with gaming,

the Asus are a great gaming laptop but I don't know about their quality,

I don't want to compromise between quality and gaming,

I want both, suggestions please!

Im interested to hear about your experience with these laptops if you own them

which one do you think would be best for me?