First time poster here.
I've been following the reviews and forum posts for some time and I finally feel compelled enough to chip in.
I have a 70D with Sigma 18-35 1.8 and 50-150 f2.8 OS and have been itching to sell the 70D body + 18-55 STM kit lens to fund an 80D body for the low ISO DR improvements, wider spread AF coverage, -3EV sensitivity amongst other small benefits like mechanical shutter, larger buffer, 100% VF coverage etc.
When people said the 6D ii was like a full frame 80D I was really excited to consider going FF because this would make a great two body combo that are almost ergonomically identical.
But since discovering more specs it seems like the 6D ii is more a FF rebel just in the larger 80D body. I was almost coming round to 1/4000 max shutter speed which is limiting for fast glass in bright sun, and I've been used to single SD slot and okay with that (though not pleased). But then when the sensor tests show it's the old tech and that the DR at ISO 400 and below is no better than 70D (and way behind 80D and 5D IV), I'm thinking what is the point? I already have the 18-35 1.8 which is like a 28-55 2.8 FF or thereabouts, and on an 80D this would be better than a 6D ii with 24-70 2.8 in low ISO DR, AF coverage, 1/8000 max shutter, 7fps and 1/250 max sync speed as well as being equivalent in ISO performance, DoF control etc, and most importantly at a tiny fraction of the cost of 6D ii + 24-70!
I'm hoping Sigma release a 50-85 ish f2 lens to compliment the 24-35 f2 in a two lens combo that beats the 28-55 2.8 equivalent that you can get on crop sensors with the 18-35 by a full stop.
I was really hoping that the 6D ii would at least update sensor tech so that it genuinely does seem like a FF 80D but whilst it's old sensor tech, no headphone jack, slow max shutter and sync speed and I have the 18-35, I start to look to the 5D IV but then I ask why couldn't canon just keep the 6D ii truly equivelant to the 80D as they match so perfectly together in every other way!