Im running the K3 now on my F8. I have about 1000km on the tire and all I can say is truthfully how I feel. I am not biased to any brand, in fact I am still looking for that "tire" to stick with. So far I've had the K60's, 2 sets of TKC 80 and now the Karoo 3. The K3 comes close. I do like it... but I don't love it. I think the compound is a little harder than the TKC80 but not as hard as the K60. Durability seems to be right in the middle of the K60 and TKC80 as well. Also related to compound, I found the TKC to be a little more "grippy" maybe due to it being softer, but in turn wearing faster. The Karoo 3 is great on the road, I noticed a different right away from the TKC but I found the Karoo to be a little more slippery in the wet pavement and wet dirt... not so much accelerating forward but it tended to slip sideways more easily. All round it seems good, it's more of an all rounder IMO. If you want a dirt tire there are better options and the same if you want a better street tire but it handles both respectfully. The karoo grips better than the K60 for sure but will probably wear out faster. Some people will compromise, but some people here might want better performance over durability. Everyone is different, but in general these are my first 1000km thoughts. Hope this helps anyone here.