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.
There are very, very few vets who are good at cropping. I would contact the show breeders in the area and ask who they use to crop. You may have to travel a significant distance for a quality crop. Often, breeders either do that or even fly in a skilled cropper. If you cannot locate a quality cropper please leave your pup's ears natural. There is nothing worse than a bad crop. MOST vets are bad at cropping.