I switched to Mac a couple years ago, in that time I'm now on my second MacBook pro, first one I dropped, cracked the screen, got the screen replaced free and then spilt a bottle of fizzy juice on that a few months later, all the keys went sticky and jammed half the time, ended up getting a new one through my home insurance and accidental damage after getting a quote to have the parts replaced.
I ended up buying the same MacBook again, 15" retina I7 256 SSD but with 16GB this time rather than 8GB or ram for around £1500
Both handled all the files I was throwing at them flawlessly. It still does to this day, its a Mid 2014 model.
In the space of a year I had 2 sony Vaio's fail on me, both hard drive failures and eventually I went to HP until that failed on me too, 3 laptops in just over a year.
I can't use windows now, I find it very unfriendly, I'm certainly no apple fan boy either, but they do just work. Im in the market for a new desktop and was looking at the 27" Imac 5k and noticed their prices just went up a few hundred pound from the last month when I looked at them.
I do love the look of the new MacBook pro but I can't justify the price, its astronomical to me right now.
So all in all Id stick with the 15" MacBook pro, it will do everything you want it to and with ease.