That's true that Rocna has been campaigning in a very dirty and unfair way against all the other brands on the market and claiming things that are not true regarding boat tests (there are a lot of independent tests made by dozens of European magazines to join to the few American ones).
It is also true that the Rocna is a good anchor. After reading most of those tests I would say that global impression is that the Rocna is the easiest anchor to get a hold on most bottoms, slightly better than the Spade and the one that works better with minimal rode. With normal rode the best holding power on most grounds belongs to the Spade.
I will buy a Spade for my next boat, probably because I have used a Spade for almost 10 years and I have not reasons to complain, except have to being awake at night during blows to dodge all the other boats that were dragging towards me
. But I think that I would be also very well served with a Rocna.
About test magazines results, they quote some on the Spade site:
SPADE anchor by Press - Ancre Spade Sword Skrew - Ancres haute performance -