I am new to fatbiking and I quickly learned that studs are necessary to ride during the winter in my area. Before having studs, I fell constantly. My tires would lose grip and slide like crazy on all the patches of ice. Getting the Dillinger 5s was a big improvement. The bike was able to stay upright better on the patches of ice and there was not any noticible difference in speed or performance. HOWEVER, I have still managed to make these tires slide out when I ride quickly into corners or other aggressive maneuvers. I have just learned that I cannot ride as aggressively as I typically do in the summer on my full-suspension mountain bike. I would still recommend the Dillinger 5s as they seem to be some of the best snowice tires available. But do not expect to gain unlimited grip.
These tires have completely replaced the Continental X-King in my book. Why? Nearly identical tread pattern, better rubber compound, better casing, and the easiest tubeless setup I've experienced. The beauty of the TNT casing is-as advertised-you can run them with tubes or 'no tubes'. On top of that these Barzos are $X less than the X-King Protections.
So when I hear people lauding the X-King, I can't help but offer a more reliable, more affordable, and better alternative.
Choose Vittoria, Choose the Barzon. 'Vittoria- It's the Winning Choice'