quick search produced a group in the $1000-$2600 price range: http://www.pcmag.com/article2/0,2817,2020688,00.asp
A question would be which one of these have dedicated vs integrated graphics and how does the MBP performance compare?
They all have discreet GPUs with switchable graphics, just like Macs do within OS X. So light-duty tasks utilize the Intel GPU, while the NVIDIA one (which all the models you linked to above have) for gaming and other intensive applications.
While the GeForce GTX 860M is technically a "last-generation" GPU, it's still plenty powerful, far more so than the M370X. Go to this website and do a Find (cmd/ctrl+f) for "M370X", then again for the above NVIDIA GPUs and see where they all rank. It's not even close to being a contest.
I wouldn't consider a notebook with the 860M unless you can score one for well under $1,000. The 960M is great if you're price-conscious - the Lenovo Y50 is a terrific value. However, if you can stretch your budget a bit, the 970M really hits the sweet spot for gaming performance while being able to comfortably run in highly portable notebooks (the Razer Blade is a prime example, though its cost is in MacBook Pro territory). While the 980M is an absolute beast, it commands a very stiff price premium and is typically only found in thick, heavy notebooks that require equally thick and heavy power supplies.