Closing Recommendation
Both are large wheel loaders, so pick by how far your material travels. Choose the Liebherr L566 when the loader works at one stockpile all shift, when a larger fuel tank means fewer stops, when a stronger hydraulic system fills the bucket faster in packed material, and when smooth hydrostatic control helps in tight loading. Choose the Volvo L120H when the loader carries material between a stockpile, a crusher and a hopper and higher travel speed shortens every trip, and when an efficient common rail engine and powershift drive keep your fuel cost down on longer runs. So match the machine to your work: Liebherr L566 for hard loading at one face, Volvo L120H for carrying material across a site.