RE burst shooting at high frame rates - I had never seen the need. Maybe if I shot half-pipe snowboarding I would, but . . .
My son shoots most Lacrosse action single shot except in goal shooting situations. However, he recently made a case for 3 - 5 shot bursts at 8 fps when trying to capture his infant children's smiles. At that rate he can capture in a short burst his child's actual facial transition from resting to recognizing his father to full smile - with natural eye catchlights - in less than a full second. It isn't really spray and pray because he is aware of having too many files to process, but he
is intentional.
Also, he is content to shoot APSc jpeg because he only posts to Twitter, Facebook, an iCloud account and his commercial website. There's no real need to shoot RAW and process, so a 7D is the right tool. He spent his money on the 24-70/4L IS and 70-200/2.8L IS. Any high end FF would just be overkill, whether K-1 or Canon or Nikon. D500 would be overkill also.
Here's a real-world user who has shot 30,000 frames since January, gets the quality images he needs and intentionally bought a NIB end-of-life body. Much of the discussion here really is not meaningful to lots of real world users.
Last edited by monochrome; 09-17-2017 at 04:59 PM.