I think the classic silver looks much nice than the black coated. And at all the hunter shows I go to everyone wearing spurs has silver ones. I love my Prince if Wales spurs if you're looking for a brand.
No matter what length spur you get make sure your leg is solid and not swinging, because you'll still catch her even if it's only a 1/4in spur. Not saying you don't have a good leg position because I have no way of knowing that but I've seen a lot of girls who's legs slide over the fence and they grab their horse with the spurs. Lol.