I have trouble getting the sizing anywhere near right with Caddis breathable or neoprene. In what my size SHOULD be, it's like putting two quarts in a one quart bottle, and in the next size up, the legs are baggier than a Shar-Pei and my feets float around in the booties with an inch too much length and nearly two inches too much width. I don't get it: my feet look pretty average to me and the little kids don't make fun of me when I'm barefooted.
Other than sizing, they're good quality, and if you got yours to fit comfortably, you did good.
I held onto a pair of Caddis waist-high breathable stocking foot waders. If anyone knows how to tailor the booties for a better fit - to get rid of all the folds inside the wading boots - I'm definitely interested.