I like the single buckles myself.

But I do not have any issues with the chained dogs on Stillwater collars. I use to have a lot of the O'Brien collars. I had no issues with the O'Brien collars either. Both served me well. The Stillwater collars go on sale more often and the bundles make them cheaper.

Most of the time I just need 1 or 2 collars so a few of us will get together and buy the kennel pack. Works well.

EWO