If you want something that runs linux well (I currently have Cent OS running on mine, and it comes pre-loaded with Ubuntu), I'd say System 76 is a pretty good choice. Their 15.6" version is pretty beefy ($1400 base), but even their 14" model looks good right now ($800 base). The model I use is a few years old, and is holding up
really well. They have native drivers for pretty much everything, even the hardware switches are supported through the BIOS if I remember correctly, so when I loaded up other distros,
nothing was a problem.
Windows pretty much runs on everything, but my work computer is a Lenovo/ThinkPad T540P. It's base is $800, but the version I'm running is optioned out to about $1500-1800 I think (Core i7 (4 core), 8GB RAM, 256GB SSD). Great computer, I've had about 14 vm's running in VirtualBox running on it at once before memory started becoming a problem (again, with the optioned out specs). (also, I run Windows 7 Enterprise on this, so may be YMMV with Windows 10).
both of those are superb, though I guess neither really competes build-quality wise with my 15" Macbook Pro Retina. I end up using that for almost anything that I don't need the GNU C/C++ toolchain for, which ends up being most stuff anyway.