These sneakers were my first purchase from Thousand Fell and I like them a lot. In terms of sizing, I went with my size in Air Force Ones, 10, which is a size smaller than my normal size. That size was a perfect fit. The sneakers required some breaking in, so I experienced a bit of discomfort during the first couple of wears. But since then, they've been comfortable, which is great since other sustainable sneakers I've tried have been unbearable.
The sneakers have creased in a few spots, but that's partly due to the shape of my feet. I will say though that I also have a pair of TF's Lace Up sneakers and they haven't creased yet.
In terms of color, you should know that the White-White color way isn't all white. It's white and beige/cream. To Thousand Fell, I hope that you make sneakers that are one shade of white very soon because I'd buy them quickly.