I currently use the Asus G750JS (has the GTX 870m in it)
There is a new model that came out this year for about 1,400~ depending on which model. My current laptop runs everything on ultra settings with exception of games like witcher 3 on the absolute highest settings that cause many pc's to crumble. My laptop has some good life left in it, i don't think I'll be getting left behind.
*edit* I've talked multiple friends of mine who were looking to get into pc gaming with this laptop and none of them have had any issues with it, everybodies games runs great, I see them everywhere i go (I'm a marine, we carry laptops with us to play on when bored and nothing to do) And everybody I know seems to really enjoy them.