I have had a Spade anchor on Liahona (Amel SM 2000) for about 8 years; I can't recall the size (weight) I bought but it is roughly the equivalent size of the SS CQG anchor the boat came new with. It fits the bow roller well. I will try and find a picture to post. This Spade sets the first time every time everywhere I have been in the Caribbean. The only time it drug was when I hooked an underwater cable and it slid along the cable. The original CQR anchor that came with the boat was pretty, never rusted etc but it was a nightmare to set in the same places.
Gary S. Silver
Amel SM 2000 # 335