I've heard good things about Uncas as a vet practice. I haven't seen/heard anything specifically about ear cropping, but I know many people who are very happy with the care and attention their pets receive from the staff there.
I haven't heard anything about the Calgary vet, but if he's the one who did my Doberman (he came from Calgary), I wouldn't recommend him. Atlas' ears are scarred along the edges and if I look closely, one ear is slightly shorter than the other. Not a hack job per se, but not a great job either.