Thank you all! And thanks for the discussion links too!
So I'm a 7.5 to 8 US, and according to most a 39 EU.
I ended up buying the 41 EU, which is the larger of the 2 8's they offer, a little bigger than the 40 their site said I should get. I mainly went with this because I did see the blurb about it on KT's website after having asked, but also when I was looking at the sizing measurements I realized I would need the larger calf, so had to size up a bit.
I am now suddenly hoping I shouldn't have gone even larger. LOL
I guess we shall see. ?