Lenovo Y50-70 here too (with Nvidia 920 graphics, and an I5 processor), just be sure to kill all bloatware they send with it, very solid buy.
I also have 3 Dell in various reincarnations (dock-able work machines), and one Asus travel laptop with a Pentium 3700 (11.6).
Only the hard drives seem to die on all the Dell's I've had, replacing 2 youngest machines with SSD did the trick.
I had to change motherboard on my ASUS after a Windows, and also changed to SSD on it.