Speed is hard to come by in DSLRs (unless of course you plan on spending about as much as a new car)--which is why the Canon EOS 7D Mark II gets such high marks. Canon's most advanced camera with an APS-C sensor hits 10 fps--add that to a 65-point autofocus system and it's may even induce a little drool in sports photographers. While the speed is a clear selling point, the Canon EOS 7D Mark II looks to be well-rounded as a whole.
The 7D Mark II isn't a full frame, but sports a 20.2 APS-C sensor. As you might expect from a top DSLR, it's quite versatile with shutter speeds up to 1/8000 and an ISO reach of 51200. Two of Canon's Digic 6 processors are inside to bring in that 10 fps burst speed--autofocus will likely perform quickly too. For wedding and event photographers, a 4 fps quiet mode is less intrusive than that speedy clicking.
Video quality should be quite good, with fast autofocus that more closely resembles a camcorder than an camera--according to Canon, anyway. The 1080p HD video is at 60 fps, so footage will be smooth. Canon cameras are known for their video quality, and this high-end model looks to live up to those expectations.
While quite powerful on the inside, the exterior isn't slacking either, with a magnesium alloy construction that should withstand dust and even light rain. There are dual control wheels and a second screen at the top with shooting info. The Canon EOS 7D Mark II can actually take both CF or SD cards, and the battery is rated at up to 800 shots.
The closest competition, speed-wise, is the Sony A7II, with a 12 fps burst speed. That speed is only available in programmed mode, however--8 fps is the speeds that's available across the board. It does have 79 autofocus points, a tilting LCD screen and wi-fi, which may make it a bit more enticing for some, but only about half the battery life. Nikon's closest competitor is the D7100, which only has a 6 fps burst mode.
The one thing I get hung up on with the Canon EOS 7D Mark II is price--the $1,700 list is closer to a basic full frame camera than a high-end APS-C option. The Sony A7II and Nikon D7100 are significantly cheaper, listed at $1,200 and often on sale for a few hundred less than that. For those who put speed as a top priority though, that price difference is likely worth it.