Greetings, All -

I am planning to retire in a year and will have more time to devote to my photography. I realize I am opening a 'can of worms' but am seeking input from fellow 'Hoggers'. My equipment is old and starting to fail - I have a Canon 40D and an older Tamron 28-300, and a Canon EF IS 75-300. I will be starting fresh and, even though I like Canon, I am open to other brands.

40 years ago, I borrowed my aunt's manual Minolta SLR for photos of my new son and halfway through the first roll knew I had to have a 35mm. My Aunt died and left me an old life insurance policy of $7000 and I thought what better way to remember her than with a camera. I photograph WWII aircraft in flight, Birds Deer and other wildlife, grandchildren, landscapes, High school sports, and an occasional wedding. I would like something that could focus and balance lighting well for aircraft in flight - somewhat slower f-stop so the props spinning but not stopped yet that would keep the plane in focus and light balanced for various lighting conditions. The other concerns are weddings and group shots in lower light. I am concerned about graininess at too high of an ISO that the new cameras have.

I am considering a Canon 5D Mkiv, a Nikon D850, and also considering Mirrorless. I am not yet at the stage to use all the features on these but hope to be. That said, are there other, less expensive cameras that might fit the bill? Canon 80D or??? Nikon___? Other suggestions that might fit the bill and leave more money for glass?.

I plan to buy within a year - my apologies for the long missive, but many responders want details.