[toni-a]

Thanks for your responses! I am on the verge of getting the 90D.
Toni-a. I like macro and telephoto more than "normal" photography, so specifically, birds, insects, flowers...stuff like that. And I just like great detail in general. Shots of animals where you get good detail. that sort of things.

Thanks again!

About birds, 7D2 would make only sense if you want to shoot them in flight otherwise 90D or M6ii are the way to go.
M6ii plus adapter should be the same as 90D for your work while being cheaper and lighter (unless you count the batteries it will be eating and that you'll have to buy and carry