I use flat buckle or snap collar for everyday wear (including training). A 6' leather leash is the lead of preference. I can grip it better!

I do not use choke chains anymore. When I first started training over 25 years ago, choke chains were the preferred method of training. It was the correct unwanted behavior and praise theory. Over the years I have been in contact with several differing opinions. There are several differing opinions still out there however more and more professional trainers are going to positive training theories instead of negative. This could be considered the Reward for wanted behavior theory.

While I have used both methods, I find training goes more quickly and more thoroughly when the reward method is used. Therefore, I don't use chokes anymore.

Just put yourself in your dogs paws. How would you like to have someone pulling a choke around your neck just because you didn't understand what they were telling you? Sorry to have gotten off the subject a little.... I just figured I should elaborate why I don't use chokes anymore since it seems so many people still do.