The Ultra anchor is a very promising design. It has a lot of the design elements of a good anchor. The steel
Spade has proven to be an excellent anchor and the Ultra has managed to incorporate many of its principals as well as some tweaks such as the turned down toe with a slightly less bulky profile. User reports rate it very highly, including some experienced members that have used other new generation anchors. It is guaranteed against bending for life.
There is an anchor test here that included the Ultra:
(This is in German. I have a copy of an English
version, but I cannot find a link to it at the moment). The conclusion for the Ultra was very positive:
"The spade anchors, SPADE and ULTRA, showed no weak point. On each floor they stopped after a few metres, the tractor could not break 800kg".
However, the Manson Supreme and steel
Spade were jointly awarded the best for the test above the Ultra. (Rocna and many other anchors were not included). It was not a very comprehensive,well conducted test. I would not put a great deal of emphasis on the result.
I do not place any value on the manufacturers mini anchor sand box test.
I have only seen a few Ultra anchors in action (and one had been modified by cutting off the chain guard) and talked to one of the owners. This is too early to form any meaningful opinion.
If in the market for this sort of anchor the stainless steel
Spade is also worth considering. The aluminium Spade does not work
as well as its steel counterpart, but the stainless model should match the steel version. The Spade is a very well proven design and is an excellent anchor of known design. Time may show the Ultra works better than the Spade, but I think at this stage it is a little bit of a gamble for such an expensive anchor.
If the concave roll bar anchors fit these are a better choice. Without a lead tip these anchors do not have any problems with regalvanising so a steel version can be used at much lower cost.