Just curious what brand/style of harness works best with your beagle. I have had a difficult time getting a good fit for Maggie. We started with the gentle leader brand and returned that one. The the rep for Halti happened to be at the store. She tried to fit Maggie using some of their half sizes with no luck. Maggie seems to have a broad chest so when we get the right measurement there, the strap for the girth doesn't fit properly. Any suggestions would be appreciated.