The holzhausen is something I've been experimenting with. Why? For several reasons, chief among them are to save space as it's a smaller footprint. An 8' diameter by 5' tall stack is about ~2 cords based on volume of cubic foot. Secondly, it is very stable, no need for cribbing, stakes, or wire/cables, and it goes pretty quick once you get the hang of it. The one shown above is about 80% complete, but it took maybe 30 minutes to do that with my wife sorting and me stacking. Lastly, and this is what I'm experimenting with - it is said that this structure creates natural convection which dries the wood faster, or at least well enough compared to straight rows. This is what I'm trying to find out. So far I'm using quick drying woods like ash and cherry, my oak are the straight rows in the background.