Love it!😀

This topic reminds me of a high school debate or a SCA battle. You go in with your battle sword and fight for the honor of the fair maiden (Sony, Canon, Nikon.....). No death or blood, just a few hurt feelings. Good way to amuse myself on a hot July afternoon and it costs nothing.

A camera body is only part of the photographer's kit. The lens and lens mounts and those wonderful accessories are brand specific. So switching brands in cameras is more expensive than switching smartphones or laptops. For a Canon user with a nice array of lenses, speedlights, and accessories the options are:
1) keep what you got and go buy a Sony (or whatever other brand)with the fabulous features you want and the lenses and accessories you need to shoot the video and stills you want. Pretty expensive way to go but certainly doable for many. 2) Sell or trade in all the Canon gear and buy a different brand. Less expensive than option 1 but more painful and depressing. 3) Save up and buy the pro-level Canon that has all the features that the 6D ii lacks but you can still use the Canon gear that you've already invested in - expensive but less depressing than 2. 4) Send Canon tweets and Facebook posts telling them how disappointed you are with the lack of 4K video in enthusiast level cameras and wait until they come out with a newer revision of the 6D that has all the features you want.

With my budget and other hobbies I'm doing 5) Keep what I got and have fun shooting stills.

So the 6D ii is a really nice transition for someone buying a full frame that already has Canon glass and is comfortable with the Canon layout and controls.

Having retired from IT recently, I know that manufacturers of IT products, and I'm assuming cameras, must do intense research on what features to add to their laptops or cameras to entice buyers to purchase and that they can produce efficiently without cost overruns while selling at a competitive price. They also use the advice of large resale buyers for what sells and what sits in inventory. If photographers are abandoning Canon because they deliver old tech and don't compete with Sony, there should be tons of wonderful Canon lenses used, refurbished, and new, for pennies on the dollar. And recent full frame pro Canon cameras!

Since it seems the 6D ii is off your list, Canon USA has a refurb 5D iv for 2799 and a 5D iii for 1999.

I follow Canon USA on Twitter so I got to see the newest cameras with promo video. Nice! I have several hobbies which get pretty expensive very quickly, so I buy last year's models on sale. Happily, my camera can more than outshine and outpace my photographic skills right now but it's fun and inspiring to quickly learn and improve so that I can justify upgrading in a year or so.

If the microfiber cloth doesn't work you should be able to try gently wiping the contacts with an alcohol swab. I keep a few tucked in my bag and my first aid kit. When my Fitbit band wouldn't start recharging, the tech suggested using the alcohol swab on the charger contacts and the Fitbit contacts. It worked great. Good luck!

I used them several years ago and they were reliable then.

Canon 5DS R. I have the 80D and love it but I can dream can't I?

If there's something you'll use in the free bundle and it's the same price, get the bundle. Donate the stuff you already have or won't use.

A more depressing cure for GAS is to ask myself (for all my hobbies) "where will I keep or store this new camera, lens, tripod, backpack, printer, handgun, rifle, scope, bike, etc." and "what will I get in trade for my old XXX". There's just so much room in the gun safe, closet, garage, attic, for all our stuff and finding out how little my old prized possession is worth in trade is eye-opening.

Now that I'm retired I have more time to dream and covet new gear for my hobbies but to keep from going broke fast 1) we use the "we're on a fixed income" chant 2) we do days to weeks worth of research on the item we want 3) we read all the reviews of the seller and their return policies 4) we have money saved for the purchase even if we use a credit card "a GAS can fund" 5) we fully functionally learn and test whatever we purchase and finally 6)if it's for a new or rediscovered hobby like photography or music, we sign up for lessons. In summary, GAS becomes exhausting so we can keep it in check.