I use two collars. One is a nylon web collar he wears all the time that has his tags on it. It fits very large and rests on the base of his neck. I could shorten it a hole and have it more around mid-neck. Is either fit better? For walking on the leash, I slip a choke collar over his head at walk time because it's easy to put on but I don't really like the choking aspect. Could someone give me a primer on collar fit and neck health?