I have a 7.5kg/16.5lb bruce knock off also on my 28' 7K boat, 15' of chain, and 250' of 3 strand, no issues in puget sound. Never dragged etc. Now a danforth style.......I've tossed all of them! never again, even for a race bouy! As said, if you get a wind/current shift, they seem to not want to reset.
I may at some future time up the chain one size along with 30'. I'm not planning on going to a 10Kg size any time soon. Altho I am looking for a 5kg size and 5-10' of chain to use for "race rule/spec" need the anchor on the bow. Keep the big boy below. As also said, one needs to know the "HOW" you plan to use the anchor as much as the style. I will say, in puget sound, many many bruce style anchors on the bows of boats.
Another local a few months back spent an enormous amount of time trying to set an aluminum fortress for RC duty. not sure it is what I want either, except for the "race" spec or a stern anchor/kedge type situation. Once set, specs show it to be a solid holding anchor!
She drives me boat,
I drives me dinghy!